X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/92340ec75375cc92b5024296817f5bb7f989135f..38ef2c8490eaa74e22504386beebc6d88d287094:/src/w32.c
diff --git a/src/w32.c b/src/w32.c
index edb9b1b618..431826c4b8 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -1,5 +1,5 @@
/* Utility and Unix shadow routines for GNU Emacs on the Microsoft Windows API.
- Copyright (C) 1994-1995, 2000-2012 Free Software Foundation, Inc.
+ Copyright (C) 1994-1995, 2000-2013 Free Software Foundation, Inc.
This file is part of GNU Emacs.
@@ -29,15 +29,15 @@ along with GNU Emacs. If not, see . */
#include
#include
#include
+#include /* must be before nt/inc/sys/time.h, for MinGW64 */
#include
#include
#include
-#include
/* must include CRT headers *before* config.h */
#include
-#include /* for _mbspbrk */
+#include /* for _mbspbrk, _mbslwr, _mbsrchr, ... */
#undef access
#undef chdir
@@ -69,7 +69,8 @@ along with GNU Emacs. If not, see . */
#include
#include
-#ifdef __GNUC__
+/* MinGW64 (_W64) defines these in its _mingw.h. */
+#if defined(__GNUC__) && !defined(_W64)
#define _ANONYMOUS_UNION
#define _ANONYMOUS_STRUCT
#endif
@@ -96,6 +97,7 @@ typedef struct _MEMORY_STATUS_EX {
#ifndef _MSC_VER
#include
#endif
+#if _WIN32_WINNT < 0x0500
#if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15)
/* This either is not in psapi.h or guarded by higher value of
_WIN32_WINNT than what we use. w32api supplied with MinGW 3.15
@@ -114,15 +116,25 @@ typedef struct _PROCESS_MEMORY_COUNTERS_EX {
SIZE_T PrivateUsage;
} PROCESS_MEMORY_COUNTERS_EX,*PPROCESS_MEMORY_COUNTERS_EX;
#endif
+#endif
#include
#include
+#include
-#ifdef _MSC_VER
-/* MSVC doesn't provide the definition of REPARSE_DATA_BUFFER and the
- associated macros, except on ntifs.h, which cannot be included
- because it triggers conflicts with other Windows API headers. So
- we define it here by hand. */
+#include
+
+/* This is not in MinGW's sddl.h (but they are in MSVC headers), so we
+ define them by hand if not already defined. */
+#ifndef SDDL_REVISION_1
+#define SDDL_REVISION_1 1
+#endif /* SDDL_REVISION_1 */
+
+#if defined(_MSC_VER) || defined(_W64)
+/* MSVC and MinGW64 don't provide the definition of
+ REPARSE_DATA_BUFFER and the associated macros, except on ntifs.h,
+ which cannot be included because it triggers conflicts with other
+ Windows API headers. So we define it here by hand. */
typedef struct _REPARSE_DATA_BUFFER {
ULONG ReparseTag;
@@ -162,9 +174,12 @@ typedef struct _REPARSE_DATA_BUFFER {
#ifndef CTL_CODE
#define CTL_CODE(t,f,m,a) (((t)<<16)|((a)<<14)|((f)<<2)|(m))
#endif
+/* MinGW64 defines FSCTL_GET_REPARSE_POINT on winioctl.h. */
+#ifndef FSCTL_GET_REPARSE_POINT
#define FSCTL_GET_REPARSE_POINT \
CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS)
#endif
+#endif
/* TCP connection support. */
#include
@@ -187,7 +202,7 @@ typedef struct _REPARSE_DATA_BUFFER {
#undef sendto
#include "w32.h"
-#include "ndir.h"
+#include
#include "w32common.h"
#include "w32heap.h"
#include "w32select.h"
@@ -257,6 +272,11 @@ static BOOL g_b_init_copy_sid;
static BOOL g_b_init_get_native_system_info;
static BOOL g_b_init_get_system_times;
static BOOL g_b_init_create_symbolic_link;
+static BOOL g_b_init_get_security_descriptor_dacl;
+static BOOL g_b_init_convert_sd_to_sddl;
+static BOOL g_b_init_convert_sddl_to_sd;
+static BOOL g_b_init_is_valid_security_descriptor;
+static BOOL g_b_init_set_file_security;
/*
BEGIN: Wrapper functions around OpenProcessToken
@@ -286,9 +306,11 @@ GetProcessTimes_Proc get_process_times_fn = NULL;
#ifdef _UNICODE
const char * const LookupAccountSid_Name = "LookupAccountSidW";
const char * const GetFileSecurity_Name = "GetFileSecurityW";
+const char * const SetFileSecurity_Name = "SetFileSecurityW";
#else
const char * const LookupAccountSid_Name = "LookupAccountSidA";
const char * const GetFileSecurity_Name = "GetFileSecurityA";
+const char * const SetFileSecurity_Name = "SetFileSecurityA";
#endif
typedef BOOL (WINAPI * LookupAccountSid_Proc) (
LPCTSTR lpSystemName,
@@ -318,6 +340,10 @@ typedef BOOL (WINAPI * GetFileSecurity_Proc) (
PSECURITY_DESCRIPTOR pSecurityDescriptor,
DWORD nLength,
LPDWORD lpnLengthNeeded);
+typedef BOOL (WINAPI *SetFileSecurity_Proc) (
+ LPCTSTR lpFileName,
+ SECURITY_INFORMATION SecurityInformation,
+ PSECURITY_DESCRIPTOR pSecurityDescriptor);
typedef BOOL (WINAPI * GetSecurityDescriptorOwner_Proc) (
PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSID *pOwner,
@@ -326,6 +352,11 @@ typedef BOOL (WINAPI * GetSecurityDescriptorGroup_Proc) (
PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSID *pGroup,
LPBOOL lpbGroupDefaulted);
+typedef BOOL (WINAPI *GetSecurityDescriptorDacl_Proc) (
+ PSECURITY_DESCRIPTOR pSecurityDescriptor,
+ LPBOOL lpbDaclPresent,
+ PACL *pDacl,
+ LPBOOL lpbDaclDefaulted);
typedef BOOL (WINAPI * IsValidSid_Proc) (
PSID sid);
typedef HANDLE (WINAPI * CreateToolhelp32Snapshot_Proc) (
@@ -376,6 +407,18 @@ typedef BOOLEAN (WINAPI *CreateSymbolicLink_Proc) (
LPTSTR lpSymlinkFileName,
LPTSTR lpTargetFileName,
DWORD dwFlags);
+typedef BOOL (WINAPI *ConvertStringSecurityDescriptorToSecurityDescriptor_Proc) (
+ LPCTSTR StringSecurityDescriptor,
+ DWORD StringSDRevision,
+ PSECURITY_DESCRIPTOR *SecurityDescriptor,
+ PULONG SecurityDescriptorSize);
+typedef BOOL (WINAPI *ConvertSecurityDescriptorToStringSecurityDescriptor_Proc) (
+ PSECURITY_DESCRIPTOR SecurityDescriptor,
+ DWORD RequestedStringSDRevision,
+ SECURITY_INFORMATION SecurityInformation,
+ LPTSTR *StringSecurityDescriptor,
+ PULONG StringSecurityDescriptorLen);
+typedef BOOL (WINAPI *IsValidSecurityDescriptor_Proc) (PSECURITY_DESCRIPTOR);
/* ** A utility function ** */
static BOOL
@@ -621,6 +664,7 @@ get_file_security (LPCTSTR lpFileName,
HMODULE hm_advapi32 = NULL;
if (is_windows_9x () == TRUE)
{
+ errno = ENOTSUP;
return FALSE;
}
if (g_b_init_get_file_security == 0)
@@ -633,6 +677,7 @@ get_file_security (LPCTSTR lpFileName,
}
if (s_pfn_Get_File_Security == NULL)
{
+ errno = ENOTSUP;
return FALSE;
}
return (s_pfn_Get_File_Security (lpFileName, RequestedInformation,
@@ -640,6 +685,35 @@ get_file_security (LPCTSTR lpFileName,
lpnLengthNeeded));
}
+static BOOL WINAPI
+set_file_security (LPCTSTR lpFileName,
+ SECURITY_INFORMATION SecurityInformation,
+ PSECURITY_DESCRIPTOR pSecurityDescriptor)
+{
+ static SetFileSecurity_Proc s_pfn_Set_File_Security = NULL;
+ HMODULE hm_advapi32 = NULL;
+ if (is_windows_9x () == TRUE)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+ if (g_b_init_set_file_security == 0)
+ {
+ g_b_init_set_file_security = 1;
+ hm_advapi32 = LoadLibrary ("Advapi32.dll");
+ s_pfn_Set_File_Security =
+ (SetFileSecurity_Proc) GetProcAddress (
+ hm_advapi32, SetFileSecurity_Name);
+ }
+ if (s_pfn_Set_File_Security == NULL)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+ return (s_pfn_Set_File_Security (lpFileName, SecurityInformation,
+ pSecurityDescriptor));
+}
+
static BOOL WINAPI
get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSID *pOwner,
@@ -649,6 +723,7 @@ get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor,
HMODULE hm_advapi32 = NULL;
if (is_windows_9x () == TRUE)
{
+ errno = ENOTSUP;
return FALSE;
}
if (g_b_init_get_security_descriptor_owner == 0)
@@ -661,6 +736,7 @@ get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor,
}
if (s_pfn_Get_Security_Descriptor_Owner == NULL)
{
+ errno = ENOTSUP;
return FALSE;
}
return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor, pOwner,
@@ -676,6 +752,7 @@ get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor,
HMODULE hm_advapi32 = NULL;
if (is_windows_9x () == TRUE)
{
+ errno = ENOTSUP;
return FALSE;
}
if (g_b_init_get_security_descriptor_group == 0)
@@ -688,12 +765,44 @@ get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor,
}
if (s_pfn_Get_Security_Descriptor_Group == NULL)
{
+ errno = ENOTSUP;
return FALSE;
}
return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor, pGroup,
lpbGroupDefaulted));
}
+static BOOL WINAPI
+get_security_descriptor_dacl (PSECURITY_DESCRIPTOR pSecurityDescriptor,
+ LPBOOL lpbDaclPresent,
+ PACL *pDacl,
+ LPBOOL lpbDaclDefaulted)
+{
+ static GetSecurityDescriptorDacl_Proc s_pfn_Get_Security_Descriptor_Dacl = NULL;
+ HMODULE hm_advapi32 = NULL;
+ if (is_windows_9x () == TRUE)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+ if (g_b_init_get_security_descriptor_dacl == 0)
+ {
+ g_b_init_get_security_descriptor_dacl = 1;
+ hm_advapi32 = LoadLibrary ("Advapi32.dll");
+ s_pfn_Get_Security_Descriptor_Dacl =
+ (GetSecurityDescriptorDacl_Proc) GetProcAddress (
+ hm_advapi32, "GetSecurityDescriptorDacl");
+ }
+ if (s_pfn_Get_Security_Descriptor_Dacl == NULL)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+ return (s_pfn_Get_Security_Descriptor_Dacl (pSecurityDescriptor,
+ lpbDaclPresent, pDacl,
+ lpbDaclDefaulted));
+}
+
static BOOL WINAPI
is_valid_sid (PSID sid)
{
@@ -888,6 +997,120 @@ create_symbolic_link (LPTSTR lpSymlinkFilename,
}
return retval;
}
+
+static BOOL WINAPI
+is_valid_security_descriptor (PSECURITY_DESCRIPTOR pSecurityDescriptor)
+{
+ static IsValidSecurityDescriptor_Proc s_pfn_Is_Valid_Security_Descriptor_Proc = NULL;
+
+ if (is_windows_9x () == TRUE)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+
+ if (g_b_init_is_valid_security_descriptor == 0)
+ {
+ g_b_init_is_valid_security_descriptor = 1;
+ s_pfn_Is_Valid_Security_Descriptor_Proc =
+ (IsValidSecurityDescriptor_Proc)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
+ "IsValidSecurityDescriptor");
+ }
+ if (s_pfn_Is_Valid_Security_Descriptor_Proc == NULL)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+
+ return s_pfn_Is_Valid_Security_Descriptor_Proc (pSecurityDescriptor);
+}
+
+static BOOL WINAPI
+convert_sd_to_sddl (PSECURITY_DESCRIPTOR SecurityDescriptor,
+ DWORD RequestedStringSDRevision,
+ SECURITY_INFORMATION SecurityInformation,
+ LPTSTR *StringSecurityDescriptor,
+ PULONG StringSecurityDescriptorLen)
+{
+ static ConvertSecurityDescriptorToStringSecurityDescriptor_Proc s_pfn_Convert_SD_To_SDDL = NULL;
+ BOOL retval;
+
+ if (is_windows_9x () == TRUE)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+
+ if (g_b_init_convert_sd_to_sddl == 0)
+ {
+ g_b_init_convert_sd_to_sddl = 1;
+#ifdef _UNICODE
+ s_pfn_Convert_SD_To_SDDL =
+ (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
+ "ConvertSecurityDescriptorToStringSecurityDescriptorW");
+#else
+ s_pfn_Convert_SD_To_SDDL =
+ (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
+ "ConvertSecurityDescriptorToStringSecurityDescriptorA");
+#endif
+ }
+ if (s_pfn_Convert_SD_To_SDDL == NULL)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+
+ retval = s_pfn_Convert_SD_To_SDDL (SecurityDescriptor,
+ RequestedStringSDRevision,
+ SecurityInformation,
+ StringSecurityDescriptor,
+ StringSecurityDescriptorLen);
+
+ return retval;
+}
+
+static BOOL WINAPI
+convert_sddl_to_sd (LPCTSTR StringSecurityDescriptor,
+ DWORD StringSDRevision,
+ PSECURITY_DESCRIPTOR *SecurityDescriptor,
+ PULONG SecurityDescriptorSize)
+{
+ static ConvertStringSecurityDescriptorToSecurityDescriptor_Proc s_pfn_Convert_SDDL_To_SD = NULL;
+ BOOL retval;
+
+ if (is_windows_9x () == TRUE)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+
+ if (g_b_init_convert_sddl_to_sd == 0)
+ {
+ g_b_init_convert_sddl_to_sd = 1;
+#ifdef _UNICODE
+ s_pfn_Convert_SDDL_To_SD =
+ (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
+ "ConvertStringSecurityDescriptorToSecurityDescriptorW");
+#else
+ s_pfn_Convert_SDDL_To_SD =
+ (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
+ "ConvertStringSecurityDescriptorToSecurityDescriptorA");
+#endif
+ }
+ if (s_pfn_Convert_SDDL_To_SD == NULL)
+ {
+ errno = ENOTSUP;
+ return FALSE;
+ }
+
+ retval = s_pfn_Convert_SDDL_To_SD (StringSecurityDescriptor,
+ StringSDRevision,
+ SecurityDescriptor,
+ SecurityDescriptorSize);
+
+ return retval;
+}
+
/* Return 1 if P is a valid pointer to an object of size SIZE. Return
@@ -916,8 +1139,18 @@ static char startup_dir[MAXPATHLEN];
/* Get the current working directory. */
char *
-getwd (char *dir)
+getcwd (char *dir, int dirsize)
{
+ if (!dirsize)
+ {
+ errno = EINVAL;
+ return NULL;
+ }
+ if (dirsize <= strlen (startup_dir))
+ {
+ errno = ERANGE;
+ return NULL;
+ }
#if 0
if (GetCurrentDirectory (MAXPATHLEN, dir) > 0)
return dir;
@@ -1304,35 +1537,110 @@ srandom (int seed)
srand (seed);
}
+/* Current codepage for encoding file names. */
+static int file_name_codepage;
+
+/* Return the maximum length in bytes of a multibyte character
+ sequence encoded in the current ANSI codepage. This is required to
+ correctly walk the encoded file names one character at a time. */
+static int
+max_filename_mbslen (void)
+{
+ /* A simple cache to avoid calling GetCPInfo every time we need to
+ normalize a file name. The file-name encoding is not supposed to
+ be changed too frequently, if ever. */
+ static Lisp_Object last_file_name_encoding;
+ static int last_max_mbslen;
+ Lisp_Object current_encoding;
+
+ current_encoding = Vfile_name_coding_system;
+ if (NILP (current_encoding))
+ current_encoding = Vdefault_file_name_coding_system;
+
+ if (!EQ (last_file_name_encoding, current_encoding))
+ {
+ CPINFO cp_info;
+
+ last_file_name_encoding = current_encoding;
+ /* Default to the current ANSI codepage. */
+ file_name_codepage = w32_ansi_code_page;
+ if (!NILP (current_encoding))
+ {
+ char *cpname = SDATA (SYMBOL_NAME (current_encoding));
+ char *cp = NULL, *end;
+ int cpnum;
+
+ if (strncmp (cpname, "cp", 2) == 0)
+ cp = cpname + 2;
+ else if (strncmp (cpname, "windows-", 8) == 0)
+ cp = cpname + 8;
+
+ if (cp)
+ {
+ end = cp;
+ cpnum = strtol (cp, &end, 10);
+ if (cpnum && *end == '\0' && end - cp >= 2)
+ file_name_codepage = cpnum;
+ }
+ }
+
+ if (!file_name_codepage)
+ file_name_codepage = CP_ACP; /* CP_ACP = 0, but let's not assume that */
+
+ if (!GetCPInfo (file_name_codepage, &cp_info))
+ {
+ file_name_codepage = CP_ACP;
+ if (!GetCPInfo (file_name_codepage, &cp_info))
+ emacs_abort ();
+ }
+ last_max_mbslen = cp_info.MaxCharSize;
+ }
+
+ return last_max_mbslen;
+}
/* Normalize filename by converting all path separators to
the specified separator. Also conditionally convert upper
case path name components to lower case. */
static void
-normalize_filename (register char *fp, char path_sep)
+normalize_filename (register char *fp, char path_sep, int multibyte)
{
char sep;
- char *elem;
+ char *elem, *p2;
+ int dbcs_p = max_filename_mbslen () > 1;
+
+ /* Multibyte file names are in the Emacs internal representation, so
+ we can traverse them by bytes with no problems. */
+ if (multibyte)
+ dbcs_p = 0;
/* Always lower-case drive letters a-z, even if the filesystem
preserves case in filenames.
This is so filenames can be compared by string comparison
functions that are case-sensitive. Even case-preserving filesystems
do not distinguish case in drive letters. */
- if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z')
+ if (dbcs_p)
+ p2 = CharNextExA (file_name_codepage, fp, 0);
+ else
+ p2 = fp + 1;
+
+ if (*p2 == ':' && *fp >= 'A' && *fp <= 'Z')
{
*fp += 'a' - 'A';
fp += 2;
}
- if (NILP (Vw32_downcase_file_names))
+ if (multibyte || NILP (Vw32_downcase_file_names))
{
while (*fp)
{
if (*fp == '/' || *fp == '\\')
*fp = path_sep;
- fp++;
+ if (!dbcs_p)
+ fp++;
+ else
+ fp = CharNextExA (file_name_codepage, fp, 0);
}
return;
}
@@ -1355,27 +1663,36 @@ normalize_filename (register char *fp, char path_sep)
if (elem && elem != fp)
{
*fp = 0; /* temporary end of string */
- _strlwr (elem); /* while we convert to lower case */
+ _mbslwr (elem); /* while we convert to lower case */
}
*fp = sep; /* convert (or restore) path separator */
elem = fp + 1; /* next element starts after separator */
sep = path_sep;
}
- } while (*fp++);
+ if (*fp)
+ {
+ if (!dbcs_p)
+ fp++;
+ else
+ fp = CharNextExA (file_name_codepage, fp, 0);
+ }
+ } while (*fp);
}
-/* Destructively turn backslashes into slashes. */
+/* Destructively turn backslashes into slashes. MULTIBYTE non-zero
+ means the file name is a multibyte string in Emacs's internal
+ representation. */
void
-dostounix_filename (register char *p)
+dostounix_filename (register char *p, int multibyte)
{
- normalize_filename (p, '/');
+ normalize_filename (p, '/', multibyte);
}
/* Destructively turn slashes into backslashes. */
void
unixtodos_filename (register char *p)
{
- normalize_filename (p, '\\');
+ normalize_filename (p, '\\', 0);
}
/* Remove all CR's that are followed by a LF.
@@ -1426,12 +1743,17 @@ parse_root (char * name, char ** pPath)
else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1]))
{
int slashes = 2;
+ int dbcs_p = max_filename_mbslen () > 1;
+
name += 2;
do
{
if (IS_DIRECTORY_SEP (*name) && --slashes == 0)
break;
- name++;
+ if (dbcs_p)
+ name = CharNextExA (file_name_codepage, name, 0);
+ else
+ name++;
}
while ( *name );
if (IS_DIRECTORY_SEP (name[0]))
@@ -1496,7 +1818,7 @@ w32_get_long_filename (char * name, char * buf, int size)
while (p != NULL && *p)
{
q = p;
- p = strchr (q, '\\');
+ p = _mbschr (q, '\\');
if (p) *p = '\0';
len = get_long_basename (full, o, size);
if (len > 0)
@@ -1534,6 +1856,51 @@ is_unc_volume (const char *filename)
return 1;
}
+/* Emulate the Posix unsetenv. */
+int
+unsetenv (const char *name)
+{
+ char *var;
+ size_t name_len;
+ int retval;
+
+ if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+ name_len = strlen (name);
+ /* MS docs says an environment variable cannot be longer than 32K. */
+ if (name_len > 32767)
+ {
+ errno = ENOMEM;
+ return 0;
+ }
+ /* It is safe to use 'alloca' with 32K size, since the stack is at
+ least 2MB, and we set it to 8MB in the link command line. */
+ var = alloca (name_len + 2);
+ strncpy (var, name, name_len);
+ var[name_len++] = '=';
+ var[name_len] = '\0';
+ return _putenv (var);
+}
+
+/* MS _putenv doesn't support removing a variable when the argument
+ does not include the '=' character, so we fix that here. */
+int
+sys_putenv (char *str)
+{
+ const char *const name_end = strchr (str, '=');
+
+ if (name_end == NULL)
+ {
+ /* Remove the variable from the environment. */
+ return unsetenv (str);
+ }
+
+ return _putenv (str);
+}
+
#define REG_ROOT "SOFTWARE\\GNU\\Emacs"
LPBYTE
@@ -1612,7 +1979,7 @@ init_environment (char ** argv)
see if it succeeds. But I think that's too much to ask. */
/* MSVCRT's _access crashes with D_OK. */
- if (tmp && sys_access (tmp, D_OK) == 0)
+ if (tmp && faccessat (AT_FDCWD, tmp, D_OK, AT_EACCESS) == 0)
{
char * var = alloca (strlen (tmp) + 8);
sprintf (var, "TMPDIR=%s", tmp);
@@ -1723,16 +2090,16 @@ init_environment (char ** argv)
if (!GetModuleFileName (NULL, modname, MAX_PATH))
emacs_abort ();
- if ((p = strrchr (modname, '\\')) == NULL)
+ if ((p = _mbsrchr (modname, '\\')) == NULL)
emacs_abort ();
*p = 0;
- if ((p = strrchr (modname, '\\')) && xstrcasecmp (p, "\\bin") == 0)
+ if ((p = _mbsrchr (modname, '\\')) && xstrcasecmp (p, "\\bin") == 0)
{
char buf[SET_ENV_BUF_SIZE];
*p = 0;
- for (p = modname; *p; p++)
+ for (p = modname; *p; p = CharNext (p))
if (*p == '\\') *p = '/';
_snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname);
@@ -1747,17 +2114,17 @@ init_environment (char ** argv)
|| xstrcasecmp (p, "\\AMD64") == 0))
{
*p = 0;
- p = strrchr (modname, '\\');
+ p = _mbsrchr (modname, '\\');
if (p != NULL)
{
*p = 0;
- p = strrchr (modname, '\\');
+ p = _mbsrchr (modname, '\\');
if (p && xstrcasecmp (p, "\\src") == 0)
{
char buf[SET_ENV_BUF_SIZE];
*p = 0;
- for (p = modname; *p; p++)
+ for (p = modname; *p; p = CharNext (p))
if (*p == '\\') *p = '/';
_snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname);
@@ -1833,7 +2200,7 @@ init_environment (char ** argv)
memcpy (*envp, "COMSPEC=", 8);
}
- /* Remember the initial working directory for getwd. */
+ /* Remember the initial working directory for getcwd. */
/* FIXME: Do we need to resolve possible symlinks in startup_dir?
Does it matter anywhere in Emacs? */
if (!GetCurrentDirectory (MAXPATHLEN, startup_dir))
@@ -1868,7 +2235,7 @@ emacs_root_dir (void)
emacs_abort ();
strcpy (root_dir, p);
root_dir[parse_root (root_dir, NULL)] = '\0';
- dostounix_filename (root_dir);
+ dostounix_filename (root_dir, 0);
return root_dir;
}
@@ -2292,12 +2659,23 @@ get_volume_info (const char * name, const char ** pPath)
{
char *str = temp;
int slashes = 4;
+ int dbcs_p = max_filename_mbslen () > 1;
+
rootname = temp;
do
{
if (IS_DIRECTORY_SEP (*name) && --slashes == 0)
break;
- *str++ = *name++;
+ if (!dbcs_p)
+ *str++ = *name++;
+ else
+ {
+ const char *p = name;
+
+ name = CharNextExA (file_name_codepage, name, 0);
+ memcpy (str, p, name - p);
+ str += name - p;
+ }
}
while ( *name );
@@ -2446,7 +2824,7 @@ is_exec (const char * name)
and readdir. We can't use the procedures supplied in sysdep.c,
so we provide them here. */
-struct direct dir_static; /* simulated directory contents */
+struct dirent dir_static; /* simulated directory contents */
static HANDLE dir_find_handle = INVALID_HANDLE_VALUE;
static int dir_is_fat;
static char dir_pathname[MAXPATHLEN+1];
@@ -2460,7 +2838,7 @@ static char *read_unc_volume (HANDLE, char *, int);
static void close_unc_volume (HANDLE);
DIR *
-opendir (char *filename)
+opendir (const char *filename)
{
DIR *dirp;
@@ -2516,7 +2894,7 @@ closedir (DIR *dirp)
xfree ((char *) dirp);
}
-struct direct *
+struct dirent *
readdir (DIR *dirp)
{
int downcase = !NILP (Vw32_downcase_file_names);
@@ -2533,11 +2911,23 @@ readdir (DIR *dirp)
{
char filename[MAXNAMLEN + 3];
int ln;
+ int dbcs_p = max_filename_mbslen () > 1;
strcpy (filename, dir_pathname);
ln = strlen (filename) - 1;
- if (!IS_DIRECTORY_SEP (filename[ln]))
- strcat (filename, "\\");
+ if (!dbcs_p)
+ {
+ if (!IS_DIRECTORY_SEP (filename[ln]))
+ strcat (filename, "\\");
+ }
+ else
+ {
+ char *end = filename + ln + 1;
+ char *last_char = CharPrevExA (file_name_codepage, filename, end, 0);
+
+ if (!IS_DIRECTORY_SEP (*last_char))
+ strcat (filename, "\\");
+ }
strcat (filename, "*");
/* Note: No need to resolve symlinks in FILENAME, because
@@ -2570,7 +2960,7 @@ readdir (DIR *dirp)
downcase = 1; /* 8+3 aliases are returned in all caps */
}
dir_static.d_namlen = strlen (dir_static.d_name);
- dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 +
+ dir_static.d_reclen = sizeof (struct dirent) - MAXNAMLEN + 3 +
dir_static.d_namlen - dir_static.d_namlen % 4;
/* If the file name in cFileName[] includes `?' characters, it means
@@ -2588,15 +2978,22 @@ readdir (DIR *dirp)
strcpy (dir_static.d_name, dir_find_data.cFileName);
dir_static.d_namlen = strlen (dir_static.d_name);
if (dir_is_fat)
- _strlwr (dir_static.d_name);
+ _mbslwr (dir_static.d_name);
else if (downcase)
{
register char *p;
- for (p = dir_static.d_name; *p; p++)
- if (*p >= 'a' && *p <= 'z')
- break;
+ int dbcs_p = max_filename_mbslen () > 1;
+ for (p = dir_static.d_name; *p; )
+ {
+ if (*p >= 'a' && *p <= 'z')
+ break;
+ if (dbcs_p)
+ p = CharNextExA (file_name_codepage, p, 0);
+ else
+ p++;
+ }
if (!*p)
- _strlwr (dir_static.d_name);
+ _mbslwr (dir_static.d_name);
}
return &dir_static;
@@ -2635,6 +3032,7 @@ read_unc_volume (HANDLE henum, char *readbuf, int size)
DWORD bufsize = 512;
char *buffer;
char *ptr;
+ int dbcs_p = max_filename_mbslen () > 1;
count = 1;
buffer = alloca (bufsize);
@@ -2645,7 +3043,13 @@ read_unc_volume (HANDLE henum, char *readbuf, int size)
/* WNetEnumResource returns \\resource\share...skip forward to "share". */
ptr = ((LPNETRESOURCE) buffer)->lpRemoteName;
ptr += 2;
- while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++;
+ if (!dbcs_p)
+ while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++;
+ else
+ {
+ while (*ptr && !IS_DIRECTORY_SEP (*ptr))
+ ptr = CharNextExA (file_name_codepage, ptr, 0);
+ }
ptr++;
strncpy (readbuf, ptr, size);
@@ -2682,9 +3086,11 @@ logon_network_drive (const char *path)
{
NETRESOURCE resource;
char share[MAX_PATH];
- int i, n_slashes;
+ int n_slashes;
char drive[4];
UINT drvtype;
+ char *p;
+ int dbcs_p;
if (IS_DIRECTORY_SEP (path[0]) && IS_DIRECTORY_SEP (path[1]))
drvtype = DRIVE_REMOTE;
@@ -2706,13 +3112,18 @@ logon_network_drive (const char *path)
n_slashes = 2;
strncpy (share, path, MAX_PATH);
/* Truncate to just server and share name. */
- for (i = 2; i < MAX_PATH; i++)
+ dbcs_p = max_filename_mbslen () > 1;
+ for (p = share + 2; *p && p < share + MAX_PATH; )
{
- if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3)
+ if (IS_DIRECTORY_SEP (*p) && ++n_slashes > 3)
{
- share[i] = '\0';
+ *p = '\0';
break;
}
+ if (dbcs_p)
+ p = CharNextExA (file_name_codepage, p, 0);
+ else
+ p++;
}
resource.dwType = RESOURCETYPE_DISK;
@@ -2723,16 +3134,20 @@ logon_network_drive (const char *path)
WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE);
}
-/* Shadow some MSVC runtime functions to map requests for long filenames
- to reasonable short names if necessary. This was originally added to
- permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
- long file names. */
-
+/* Emulate faccessat(2). */
int
-sys_access (const char * path, int mode)
+faccessat (int dirfd, const char * path, int mode, int flags)
{
DWORD attributes;
+ if (dirfd != AT_FDCWD
+ && !(IS_DIRECTORY_SEP (path[0])
+ || IS_DEVICE_SEP (path[1])))
+ {
+ errno = EBADF;
+ return -1;
+ }
+
/* MSVCRT implementation of 'access' doesn't recognize D_OK, and its
newer versions blow up when passed D_OK. */
path = map_w32_filename (path, NULL);
@@ -2740,7 +3155,8 @@ sys_access (const char * path, int mode)
to get the attributes of its target file. Note: any symlinks in
PATH elements other than the last one are transparently resolved
by GetFileAttributes below. */
- if ((volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) != 0)
+ if ((volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) != 0
+ && (flags & AT_SYMLINK_NOFOLLOW) == 0)
path = chase_symlinks (path);
if ((attributes = GetFileAttributes (path)) == -1)
@@ -2772,7 +3188,8 @@ sys_access (const char * path, int mode)
}
return -1;
}
- if ((mode & X_OK) != 0 && !is_exec (path))
+ if ((mode & X_OK) != 0
+ && !(is_exec (path) || (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0))
{
errno = EACCES;
return -1;
@@ -2790,6 +3207,11 @@ sys_access (const char * path, int mode)
return 0;
}
+/* Shadow some MSVC runtime functions to map requests for long filenames
+ to reasonable short names if necessary. This was originally added to
+ permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
+ long file names. */
+
int
sys_chdir (const char * path)
{
@@ -2803,14 +3225,6 @@ sys_chmod (const char * path, int mode)
return _chmod (path, mode);
}
-int
-sys_chown (const char *path, uid_t owner, gid_t group)
-{
- if (sys_chmod (path, S_IREAD) == -1) /* check if file exists */
- return -1;
- return 0;
-}
-
int
sys_creat (const char * path, int mode)
{
@@ -2975,7 +3389,7 @@ sys_mktemp (char * template)
{
int save_errno = errno;
p[0] = first_char[i];
- if (sys_access (template, 0) < 0)
+ if (faccessat (AT_FDCWD, template, F_OK, AT_EACCESS) < 0)
{
errno = save_errno;
return template;
@@ -2994,17 +3408,27 @@ int
sys_open (const char * path, int oflag, int mode)
{
const char* mpath = map_w32_filename (path, NULL);
- /* Try to open file without _O_CREAT, to be able to write to hidden
- and system files. Force all file handles to be
- non-inheritable. */
- int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode);
- if (res >= 0)
- return res;
- return _open (mpath, oflag | _O_NOINHERIT, mode);
+ int res = -1;
+
+ /* If possible, try to open file without _O_CREAT, to be able to
+ write to existing hidden and system files. Force all file
+ handles to be non-inheritable. */
+ if ((oflag & (_O_CREAT | _O_EXCL)) != (_O_CREAT | _O_EXCL))
+ res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode);
+ if (res < 0)
+ res = _open (mpath, oflag | _O_NOINHERIT, mode);
+
+ return res;
}
int
-sys_rename (const char * oldname, const char * newname)
+fchmod (int fd, mode_t mode)
+{
+ return 0;
+}
+
+int
+sys_rename_replace (const char *oldname, const char *newname, BOOL force)
{
BOOL result;
char temp[MAX_PATH];
@@ -3060,7 +3484,7 @@ sys_rename (const char * oldname, const char * newname)
return -1;
}
- /* Emulate Unix behavior - newname is deleted if it already exists
+ /* If FORCE, emulate Unix behavior - newname is deleted if it already exists
(at least if it is a file; don't do this for directories).
Since we mustn't do this if we are just changing the case of the
@@ -3078,7 +3502,7 @@ sys_rename (const char * oldname, const char * newname)
result = rename (temp, newname);
- if (result < 0)
+ if (result < 0 && force)
{
DWORD w32err = GetLastError ();
@@ -3117,6 +3541,12 @@ sys_rename (const char * oldname, const char * newname)
return result;
}
+int
+sys_rename (char const *old, char const *new)
+{
+ return sys_rename_replace (old, new, TRUE);
+}
+
int
sys_rmdir (const char * path)
{
@@ -3365,7 +3795,6 @@ static int
get_name_and_id (PSECURITY_DESCRIPTOR psd, unsigned *id, char *nm, int what)
{
PSID sid = NULL;
- char machine[MAX_COMPUTERNAME_LENGTH+1];
BOOL dflt;
SID_NAME_USE ignore;
char name[UNLEN+1];
@@ -3453,6 +3882,10 @@ is_slow_fs (const char *name)
return !(devtype == DRIVE_FIXED || devtype == DRIVE_RAMDISK);
}
+/* If this is non-zero, the caller wants accurate information about
+ file's owner and group, which could be expensive to get. */
+int w32_stat_get_owner_group;
+
/* MSVC stat function can't cope with UNC names and has other bugs, so
replace it with our own. This also allows us to calculate consistent
inode values and owner/group without hacks in the main Emacs code. */
@@ -3473,6 +3906,7 @@ stat_worker (const char * path, struct stat * buf, int follow_symlinks)
DWORD access_rights = 0;
DWORD fattrs = 0, serialnum = 0, fs_high = 0, fs_low = 0, nlinks = 1;
FILETIME ctime, atime, wtime;
+ int dbcs_p;
if (path == NULL || buf == NULL)
{
@@ -3624,6 +4058,7 @@ stat_worker (const char * path, struct stat * buf, int follow_symlinks)
/* We produce the fallback owner and group data, based on the
current user that runs Emacs, in the following cases:
+ . caller didn't request owner and group info
. this is Windows 9X
. getting security by handle failed, and we need to produce
information for the target of a symlink (this is better
@@ -3632,23 +4067,25 @@ stat_worker (const char * path, struct stat * buf, int follow_symlinks)
If getting security by handle fails, and we don't need to
resolve symlinks, we try getting security by name. */
- if (is_windows_9x () != TRUE)
- psd = get_file_security_desc_by_handle (fh);
- if (psd)
- {
- get_file_owner_and_group (psd, buf);
- LocalFree (psd);
- }
- else if (is_windows_9x () == TRUE)
+ if (!w32_stat_get_owner_group || is_windows_9x () == TRUE)
get_file_owner_and_group (NULL, buf);
- else if (!(is_a_symlink && follow_symlinks))
+ else
{
- psd = get_file_security_desc_by_name (name);
- get_file_owner_and_group (psd, buf);
- xfree (psd);
+ psd = get_file_security_desc_by_handle (fh);
+ if (psd)
+ {
+ get_file_owner_and_group (psd, buf);
+ LocalFree (psd);
+ }
+ else if (!(is_a_symlink && follow_symlinks))
+ {
+ psd = get_file_security_desc_by_name (name);
+ get_file_owner_and_group (psd, buf);
+ xfree (psd);
+ }
+ else
+ get_file_owner_and_group (NULL, buf);
}
- else
- get_file_owner_and_group (NULL, buf);
CloseHandle (fh);
}
else
@@ -3667,6 +4104,7 @@ stat_worker (const char * path, struct stat * buf, int follow_symlinks)
did not ask for extra precision, resolving symlinks will fly
in the face of that request, since the user then wants the
lightweight version of the code. */
+ dbcs_p = max_filename_mbslen () > 1;
rootdir = (path >= save_name + len - 1
&& (IS_DIRECTORY_SEP (*path) || *path == 0));
@@ -3694,8 +4132,19 @@ stat_worker (const char * path, struct stat * buf, int follow_symlinks)
}
else if (rootdir)
{
- if (!IS_DIRECTORY_SEP (name[len-1]))
- strcat (name, "\\");
+ if (!dbcs_p)
+ {
+ if (!IS_DIRECTORY_SEP (name[len-1]))
+ strcat (name, "\\");
+ }
+ else
+ {
+ char *end = name + len;
+ char *n = CharPrevExA (file_name_codepage, name, end, 0);
+
+ if (!IS_DIRECTORY_SEP (*n))
+ strcat (name, "\\");
+ }
if (GetDriveType (name) < 2)
{
errno = ENOENT;
@@ -3707,15 +4156,37 @@ stat_worker (const char * path, struct stat * buf, int follow_symlinks)
}
else
{
- if (IS_DIRECTORY_SEP (name[len-1]))
- name[len - 1] = 0;
+ if (!dbcs_p)
+ {
+ if (IS_DIRECTORY_SEP (name[len-1]))
+ name[len - 1] = 0;
+ }
+ else
+ {
+ char *end = name + len;
+ char *n = CharPrevExA (file_name_codepage, name, end, 0);
+
+ if (IS_DIRECTORY_SEP (*n))
+ *n = 0;
+ }
/* (This is hacky, but helps when doing file completions on
network drives.) Optimize by using information available from
active readdir if possible. */
len = strlen (dir_pathname);
- if (IS_DIRECTORY_SEP (dir_pathname[len-1]))
- len--;
+ if (!dbcs_p)
+ {
+ if (IS_DIRECTORY_SEP (dir_pathname[len-1]))
+ len--;
+ }
+ else
+ {
+ char *end = dir_pathname + len;
+ char *n = CharPrevExA (file_name_codepage, dir_pathname, end, 0);
+
+ if (IS_DIRECTORY_SEP (*n))
+ len--;
+ }
if (dir_find_handle != INVALID_HANDLE_VALUE
&& !(is_a_symlink && follow_symlinks)
&& strnicmp (save_name, dir_pathname, len) == 0
@@ -3821,6 +4292,30 @@ lstat (const char * path, struct stat * buf)
return stat_worker (path, buf, 0);
}
+int
+fstatat (int fd, char const *name, struct stat *st, int flags)
+{
+ /* Rely on a hack: an open directory is modeled as file descriptor 0.
+ This is good enough for the current usage in Emacs, but is fragile.
+
+ FIXME: Add proper support for fdopendir, fstatat, readlinkat.
+ Gnulib does this and can serve as a model. */
+ char fullname[MAX_PATH];
+
+ if (fd != AT_FDCWD)
+ {
+ if (_snprintf (fullname, sizeof fullname, "%s/%s", dir_pathname, name)
+ < 0)
+ {
+ errno = ENAMETOOLONG;
+ return -1;
+ }
+ name = fullname;
+ }
+
+ return stat_worker (name, st, ! (flags & AT_SYMLINK_NOFOLLOW));
+}
+
/* Provide fstat and utime as well as stat for consistent handling of
file timestamps. */
int
@@ -3875,13 +4370,23 @@ fstat (int desc, struct stat * buf)
else
buf->st_ino = fake_inode;
- /* Consider files to belong to current user.
- FIXME: this should use GetSecurityInfo API, but it is only
- available for _WIN32_WINNT >= 0x501. */
- buf->st_uid = dflt_passwd.pw_uid;
- buf->st_gid = dflt_passwd.pw_gid;
- strcpy (buf->st_uname, dflt_passwd.pw_name);
- strcpy (buf->st_gname, dflt_group.gr_name);
+ /* If the caller so requested, get the true file owner and group.
+ Otherwise, consider the file to belong to the current user. */
+ if (!w32_stat_get_owner_group || is_windows_9x () == TRUE)
+ get_file_owner_and_group (NULL, buf);
+ else
+ {
+ PSECURITY_DESCRIPTOR psd = NULL;
+
+ psd = get_file_security_desc_by_handle (fh);
+ if (psd)
+ {
+ get_file_owner_and_group (psd, buf);
+ LocalFree (psd);
+ }
+ else
+ get_file_owner_and_group (NULL, buf);
+ }
buf->st_dev = info.dwVolumeSerialNumber;
buf->st_rdev = info.dwVolumeSerialNumber;
@@ -3976,6 +4481,7 @@ symlink (char const *filename, char const *linkname)
char linkfn[MAX_PATH], *tgtfn;
DWORD flags = 0;
int dir_access, filename_ends_in_slash;
+ int dbcs_p;
/* Diagnostics follows Posix as much as possible. */
if (filename == NULL || linkname == NULL)
@@ -4001,13 +4507,15 @@ symlink (char const *filename, char const *linkname)
return -1;
}
+ dbcs_p = max_filename_mbslen () > 1;
+
/* Note: since empty FILENAME was already rejected, we can safely
refer to FILENAME[1]. */
if (!(IS_DIRECTORY_SEP (filename[0]) || IS_DEVICE_SEP (filename[1])))
{
/* Non-absolute FILENAME is understood as being relative to
LINKNAME's directory. We need to prepend that directory to
- FILENAME to get correct results from sys_access below, since
+ FILENAME to get correct results from faccessat below, since
otherwise it will interpret FILENAME relative to the
directory where the Emacs process runs. Note that
make-symbolic-link always makes sure LINKNAME is a fully
@@ -4015,23 +4523,44 @@ symlink (char const *filename, char const *linkname)
char tem[MAX_PATH];
char *p = linkfn + strlen (linkfn);
- while (p > linkfn && !IS_ANY_SEP (p[-1]))
- p--;
+ if (!dbcs_p)
+ {
+ while (p > linkfn && !IS_ANY_SEP (p[-1]))
+ p--;
+ }
+ else
+ {
+ char *p1 = CharPrevExA (file_name_codepage, linkfn, p, 0);
+
+ while (p > linkfn && !IS_ANY_SEP (*p1))
+ {
+ p = p1;
+ p1 = CharPrevExA (file_name_codepage, linkfn, p1, 0);
+ }
+ }
if (p > linkfn)
strncpy (tem, linkfn, p - linkfn);
tem[p - linkfn] = '\0';
strcat (tem, filename);
- dir_access = sys_access (tem, D_OK);
+ dir_access = faccessat (AT_FDCWD, tem, D_OK, AT_EACCESS);
}
else
- dir_access = sys_access (filename, D_OK);
+ dir_access = faccessat (AT_FDCWD, filename, D_OK, AT_EACCESS);
/* Since Windows distinguishes between symlinks to directories and
to files, we provide a kludgy feature: if FILENAME doesn't
exist, but ends in a slash, we create a symlink to directory. If
FILENAME exists and is a directory, we always create a symlink to
directory. */
- filename_ends_in_slash = IS_DIRECTORY_SEP (filename[strlen (filename) - 1]);
+ if (!dbcs_p)
+ filename_ends_in_slash = IS_DIRECTORY_SEP (filename[strlen (filename) - 1]);
+ else
+ {
+ const char *end = filename + strlen (filename);
+ const char *n = CharPrevExA (file_name_codepage, filename, end, 0);
+
+ filename_ends_in_slash = IS_DIRECTORY_SEP (*n);
+ }
if (dir_access == 0 || filename_ends_in_slash)
flags = SYMBOLIC_LINK_FLAG_DIRECTORY;
@@ -4210,7 +4739,7 @@ readlink (const char *name, char *buf, size_t buf_size)
errno = EINVAL;
else
{
- /* Copy the link target name, in wide characters, fro
+ /* Copy the link target name, in wide characters, from
reparse_data, then convert it to multibyte encoding in
the current locale's codepage. */
WCHAR *lwname;
@@ -4221,6 +4750,8 @@ readlink (const char *name, char *buf, size_t buf_size)
WCHAR *lwname_src =
reparse_data->SymbolicLinkReparseBuffer.PathBuffer
+ reparse_data->SymbolicLinkReparseBuffer.PrintNameOffset/sizeof(WCHAR);
+ /* This updates file_name_codepage which we need below. */
+ int dbcs_p = max_filename_mbslen () > 1;
/* According to MSDN, PrintNameLength does not include the
terminating null character. */
@@ -4228,9 +4759,7 @@ readlink (const char *name, char *buf, size_t buf_size)
memcpy (lwname, lwname_src, lwname_len);
lwname[lwname_len/sizeof(WCHAR)] = 0; /* null-terminate */
- /* FIXME: Should we use the current file-name coding system
- instead of the fixed value of the ANSI codepage? */
- lname_len = WideCharToMultiByte (w32_ansi_code_page, 0, lwname, -1,
+ lname_len = WideCharToMultiByte (file_name_codepage, 0, lwname, -1,
lname, MAX_PATH, NULL, NULL);
if (!lname_len)
{
@@ -4256,18 +4785,33 @@ readlink (const char *name, char *buf, size_t buf_size)
else
{
size_t size_to_copy = buf_size;
- BYTE *p = lname;
+ BYTE *p = lname, *p2;
BYTE *pend = p + lname_len;
/* Normalize like dostounix_filename does, but we don't
want to assume that lname is null-terminated. */
- if (*p && p[1] == ':' && *p >= 'A' && *p <= 'Z')
- *p += 'a' - 'A';
+ if (dbcs_p)
+ p2 = CharNextExA (file_name_codepage, p, 0);
+ else
+ p2 = p + 1;
+ if (*p && *p2 == ':' && *p >= 'A' && *p <= 'Z')
+ {
+ *p += 'a' - 'A';
+ p += 2;
+ }
while (p <= pend)
{
if (*p == '\\')
*p = '/';
- ++p;
+ if (dbcs_p)
+ {
+ p = CharNextExA (file_name_codepage, p, 0);
+ /* CharNextExA doesn't advance at null character. */
+ if (!*p)
+ break;
+ }
+ else
+ ++p;
}
/* Testing for null-terminated LNAME is paranoia:
WideCharToMultiByte should always return a
@@ -4314,6 +4858,28 @@ readlink (const char *name, char *buf, size_t buf_size)
return retval;
}
+ssize_t
+readlinkat (int fd, char const *name, char *buffer,
+ size_t buffer_size)
+{
+ /* Rely on a hack: an open directory is modeled as file descriptor 0,
+ as in fstatat. FIXME: Add proper support for readlinkat. */
+ char fullname[MAX_PATH];
+
+ if (fd != AT_FDCWD)
+ {
+ if (_snprintf (fullname, sizeof fullname, "%s/%s", dir_pathname, name)
+ < 0)
+ {
+ errno = ENAMETOOLONG;
+ return -1;
+ }
+ name = fullname;
+ }
+
+ return readlink (name, buffer, buffer_size);
+}
+
/* If FILE is a symlink, return its target (stored in a static
buffer); otherwise return FILE.
@@ -4341,6 +4907,7 @@ chase_symlinks (const char *file)
char link[MAX_PATH];
ssize_t res, link_len;
int loop_count = 0;
+ int dbcs_p;
if (is_windows_9x () == TRUE || !is_symlink (file))
return (char *)file;
@@ -4348,13 +4915,27 @@ chase_symlinks (const char *file)
if ((link_len = GetFullPathName (file, MAX_PATH, link, NULL)) == 0)
return (char *)file;
+ dbcs_p = max_filename_mbslen () > 1;
target[0] = '\0';
do {
/* Remove trailing slashes, as we want to resolve the last
non-trivial part of the link name. */
- while (link_len > 3 && IS_DIRECTORY_SEP (link[link_len-1]))
- link[link_len--] = '\0';
+ if (!dbcs_p)
+ {
+ while (link_len > 3 && IS_DIRECTORY_SEP (link[link_len-1]))
+ link[link_len--] = '\0';
+ }
+ else if (link_len > 3)
+ {
+ char *n = CharPrevExA (file_name_codepage, link, link + link_len, 0);
+
+ while (n >= link + 2 && IS_DIRECTORY_SEP (*n))
+ {
+ n[1] = '\0';
+ n = CharPrevExA (file_name_codepage, link, n, 0);
+ }
+ }
res = readlink (link, target, MAX_PATH);
if (res > 0)
@@ -4367,8 +4948,21 @@ chase_symlinks (const char *file)
the symlink, then copy the result back to target. */
char *p = link + link_len;
- while (p > link && !IS_ANY_SEP (p[-1]))
- p--;
+ if (!dbcs_p)
+ {
+ while (p > link && !IS_ANY_SEP (p[-1]))
+ p--;
+ }
+ else
+ {
+ char *p1 = CharPrevExA (file_name_codepage, link, p, 0);
+
+ while (p > link && !IS_ANY_SEP (*p1))
+ {
+ p = p1;
+ p1 = CharPrevExA (file_name_codepage, link, p1, 0);
+ }
+ }
strcpy (p, target);
strcpy (target, link);
}
@@ -4386,6 +4980,245 @@ chase_symlinks (const char *file)
return target;
}
+
+/* Posix ACL emulation. */
+
+int
+acl_valid (acl_t acl)
+{
+ return is_valid_security_descriptor ((PSECURITY_DESCRIPTOR)acl) ? 0 : -1;
+}
+
+char *
+acl_to_text (acl_t acl, ssize_t *size)
+{
+ LPTSTR str_acl;
+ SECURITY_INFORMATION flags =
+ OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION |
+ DACL_SECURITY_INFORMATION;
+ char *retval = NULL;
+ ULONG local_size;
+ int e = errno;
+
+ errno = 0;
+
+ if (convert_sd_to_sddl ((PSECURITY_DESCRIPTOR)acl, SDDL_REVISION_1, flags, &str_acl, &local_size))
+ {
+ errno = e;
+ /* We don't want to mix heaps, so we duplicate the string in our
+ heap and free the one allocated by the API. */
+ retval = xstrdup (str_acl);
+ if (size)
+ *size = local_size;
+ LocalFree (str_acl);
+ }
+ else if (errno != ENOTSUP)
+ errno = EINVAL;
+
+ return retval;
+}
+
+acl_t
+acl_from_text (const char *acl_str)
+{
+ PSECURITY_DESCRIPTOR psd, retval = NULL;
+ ULONG sd_size;
+ int e = errno;
+
+ errno = 0;
+
+ if (convert_sddl_to_sd (acl_str, SDDL_REVISION_1, &psd, &sd_size))
+ {
+ errno = e;
+ retval = xmalloc (sd_size);
+ memcpy (retval, psd, sd_size);
+ LocalFree (psd);
+ }
+ else if (errno != ENOTSUP)
+ errno = EINVAL;
+
+ return retval;
+}
+
+int
+acl_free (void *ptr)
+{
+ xfree (ptr);
+ return 0;
+}
+
+acl_t
+acl_get_file (const char *fname, acl_type_t type)
+{
+ PSECURITY_DESCRIPTOR psd = NULL;
+ const char *filename;
+
+ if (type == ACL_TYPE_ACCESS)
+ {
+ DWORD sd_len, err;
+ SECURITY_INFORMATION si =
+ OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION |
+ DACL_SECURITY_INFORMATION ;
+ int e = errno;
+
+ filename = map_w32_filename (fname, NULL);
+ if ((volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) != 0)
+ fname = chase_symlinks (filename);
+ else
+ fname = filename;
+
+ errno = 0;
+ if (!get_file_security (fname, si, psd, 0, &sd_len)
+ && errno != ENOTSUP)
+ {
+ err = GetLastError ();
+ if (err == ERROR_INSUFFICIENT_BUFFER)
+ {
+ psd = xmalloc (sd_len);
+ if (!get_file_security (fname, si, psd, sd_len, &sd_len))
+ {
+ xfree (psd);
+ errno = EIO;
+ psd = NULL;
+ }
+ }
+ else if (err == ERROR_FILE_NOT_FOUND
+ || err == ERROR_PATH_NOT_FOUND)
+ errno = ENOENT;
+ else
+ errno = EIO;
+ }
+ else if (!errno)
+ errno = e;
+ }
+ else if (type != ACL_TYPE_DEFAULT)
+ errno = EINVAL;
+
+ return psd;
+}
+
+int
+acl_set_file (const char *fname, acl_type_t type, acl_t acl)
+{
+ TOKEN_PRIVILEGES old1, old2;
+ DWORD err;
+ int st = 0, retval = -1;
+ SECURITY_INFORMATION flags = 0;
+ PSID psid;
+ PACL pacl;
+ BOOL dflt;
+ BOOL dacl_present;
+ int e;
+ const char *filename;
+
+ if (acl_valid (acl) != 0
+ || (type != ACL_TYPE_DEFAULT && type != ACL_TYPE_ACCESS))
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (type == ACL_TYPE_DEFAULT)
+ {
+ errno = ENOSYS;
+ return -1;
+ }
+
+ filename = map_w32_filename (fname, NULL);
+ if ((volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) != 0)
+ fname = chase_symlinks (filename);
+ else
+ fname = filename;
+
+ if (get_security_descriptor_owner ((PSECURITY_DESCRIPTOR)acl, &psid, &dflt)
+ && psid)
+ flags |= OWNER_SECURITY_INFORMATION;
+ if (get_security_descriptor_group ((PSECURITY_DESCRIPTOR)acl, &psid, &dflt)
+ && psid)
+ flags |= GROUP_SECURITY_INFORMATION;
+ if (get_security_descriptor_dacl ((PSECURITY_DESCRIPTOR)acl, &dacl_present,
+ &pacl, &dflt)
+ && dacl_present)
+ flags |= DACL_SECURITY_INFORMATION;
+ if (!flags)
+ return 0;
+
+ /* According to KB-245153, setting the owner will succeed if either:
+ (1) the caller is the user who will be the new owner, and has the
+ SE_TAKE_OWNERSHIP privilege, or
+ (2) the caller has the SE_RESTORE privilege, in which case she can
+ set any valid user or group as the owner
+
+ We request below both SE_TAKE_OWNERSHIP and SE_RESTORE
+ privileges, and disregard any failures in obtaining them. If
+ these privileges cannot be obtained, and do not already exist in
+ the calling thread's security token, this function could fail
+ with EPERM. */
+ if (enable_privilege (SE_TAKE_OWNERSHIP_NAME, TRUE, &old1))
+ st++;
+ if (enable_privilege (SE_RESTORE_NAME, TRUE, &old2))
+ st++;
+
+ e = errno;
+ errno = 0;
+ if (!set_file_security ((char *)fname, flags, (PSECURITY_DESCRIPTOR)acl))
+ {
+ err = GetLastError ();
+
+ if (errno == ENOTSUP)
+ ;
+ else if (err == ERROR_INVALID_OWNER
+ || err == ERROR_NOT_ALL_ASSIGNED
+ || err == ERROR_ACCESS_DENIED)
+ {
+ /* Maybe the requested ACL and the one the file already has
+ are identical, in which case we can silently ignore the
+ failure. (And no, Windows doesn't.) */
+ acl_t current_acl = acl_get_file (fname, ACL_TYPE_ACCESS);
+
+ errno = EPERM;
+ if (current_acl)
+ {
+ char *acl_from = acl_to_text (current_acl, NULL);
+ char *acl_to = acl_to_text (acl, NULL);
+
+ if (acl_from && acl_to && xstrcasecmp (acl_from, acl_to) == 0)
+ {
+ retval = 0;
+ errno = e;
+ }
+ if (acl_from)
+ acl_free (acl_from);
+ if (acl_to)
+ acl_free (acl_to);
+ acl_free (current_acl);
+ }
+ }
+ else if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
+ errno = ENOENT;
+ else
+ errno = EACCES;
+ }
+ else
+ {
+ retval = 0;
+ errno = e;
+ }
+
+ if (st)
+ {
+ if (st >= 2)
+ restore_privilege (&old2);
+ restore_privilege (&old1);
+ revert_to_self ();
+ }
+
+ return retval;
+}
+
+
/* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We
have a fixed max size for file names, so we don't need the kind of
alloc/malloc/realloc dance the gnulib version does. We also don't
@@ -4399,12 +5232,6 @@ careadlinkat (int fd, char const *filename,
char linkname[MAX_PATH];
ssize_t link_size;
- if (fd != AT_FDCWD)
- {
- errno = EINVAL;
- return NULL;
- }
-
link_size = preadlinkat (fd, filename, linkname, sizeof(linkname));
if (link_size > 0)
@@ -4422,14 +5249,6 @@ careadlinkat (int fd, char const *filename,
return NULL;
}
-ssize_t
-careadlinkatcwd (int fd, char const *filename, char *buffer,
- size_t buffer_size)
-{
- (void) fd;
- return readlink (filename, buffer, buffer_size);
-}
-
/* Support for browsing other processes and their attributes. See
process.c for the Lisp bindings. */
@@ -4767,10 +5586,8 @@ ltime (ULONGLONG time_100ns)
{
ULONGLONG time_sec = time_100ns / 10000000;
int subsec = time_100ns % 10000000;
- return list4 (make_number (time_sec >> 16),
- make_number (time_sec & 0xffff),
- make_number (subsec / 10),
- make_number (subsec % 10 * 100000));
+ return list4i (time_sec >> 16, time_sec & 0xffff,
+ subsec / 10, subsec % 10 * 100000);
}
#define U64_TO_LISP_TIME(time) ltime (time)
@@ -5284,35 +6101,39 @@ init_winsock (int load_now)
int h_errno = 0;
-/* function to set h_errno for compatibility; map winsock error codes to
- normal system codes where they overlap (non-overlapping definitions
- are already in */
+/* Function to map winsock error codes to errno codes for those errno
+ code defined in errno.h (errno values not defined by errno.h are
+ already in nt/inc/sys/socket.h). */
static void
set_errno (void)
{
+ int wsa_err;
+
+ h_errno = 0;
if (winsock_lib == NULL)
- h_errno = EINVAL;
+ wsa_err = EINVAL;
else
- h_errno = pfn_WSAGetLastError ();
+ wsa_err = pfn_WSAGetLastError ();
- switch (h_errno)
+ switch (wsa_err)
{
- case WSAEACCES: h_errno = EACCES; break;
- case WSAEBADF: h_errno = EBADF; break;
- case WSAEFAULT: h_errno = EFAULT; break;
- case WSAEINTR: h_errno = EINTR; break;
- case WSAEINVAL: h_errno = EINVAL; break;
- case WSAEMFILE: h_errno = EMFILE; break;
- case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break;
- case WSAENOTEMPTY: h_errno = ENOTEMPTY; break;
+ case WSAEACCES: errno = EACCES; break;
+ case WSAEBADF: errno = EBADF; break;
+ case WSAEFAULT: errno = EFAULT; break;
+ case WSAEINTR: errno = EINTR; break;
+ case WSAEINVAL: errno = EINVAL; break;
+ case WSAEMFILE: errno = EMFILE; break;
+ case WSAENAMETOOLONG: errno = ENAMETOOLONG; break;
+ case WSAENOTEMPTY: errno = ENOTEMPTY; break;
+ default: errno = wsa_err; break;
}
- errno = h_errno;
}
static void
check_errno (void)
{
- if (h_errno == 0 && winsock_lib != NULL)
+ h_errno = 0;
+ if (winsock_lib != NULL)
pfn_WSASetLastError (0);
}
@@ -5424,7 +6245,7 @@ sys_socket (int af, int type, int protocol)
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return INVALID_SOCKET;
}
@@ -5501,6 +6322,7 @@ socket_to_fd (SOCKET s)
}
}
}
+ eassert (fd < MAXDESC);
fd_info[fd].hnd = (HANDLE) s;
/* set our own internal flags */
@@ -5529,8 +6351,9 @@ socket_to_fd (SOCKET s)
/* clean up */
_close (fd);
}
+ else
pfn_closesocket (s);
- h_errno = EMFILE;
+ errno = EMFILE;
return -1;
}
@@ -5539,7 +6362,7 @@ sys_bind (int s, const struct sockaddr * addr, int namelen)
{
if (winsock_lib == NULL)
{
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5551,7 +6374,7 @@ sys_bind (int s, const struct sockaddr * addr, int namelen)
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5560,7 +6383,7 @@ sys_connect (int s, const struct sockaddr * name, int namelen)
{
if (winsock_lib == NULL)
{
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5572,7 +6395,7 @@ sys_connect (int s, const struct sockaddr * name, int namelen)
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5601,12 +6424,20 @@ int
sys_gethostname (char * name, int namelen)
{
if (winsock_lib != NULL)
- return pfn_gethostname (name, namelen);
+ {
+ int retval;
+
+ check_errno ();
+ retval = pfn_gethostname (name, namelen);
+ if (retval == SOCKET_ERROR)
+ set_errno ();
+ return retval;
+ }
if (namelen > MAX_COMPUTERNAME_LENGTH)
return !GetComputerName (name, (DWORD *)&namelen);
- h_errno = EFAULT;
+ errno = EFAULT;
return SOCKET_ERROR;
}
@@ -5614,17 +6445,24 @@ struct hostent *
sys_gethostbyname (const char * name)
{
struct hostent * host;
+ int h_err = h_errno;
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ h_errno = NO_RECOVERY;
+ errno = ENETDOWN;
return NULL;
}
check_errno ();
host = pfn_gethostbyname (name);
if (!host)
- set_errno ();
+ {
+ set_errno ();
+ h_errno = errno;
+ }
+ else
+ h_errno = h_err;
return host;
}
@@ -5635,7 +6473,7 @@ sys_getservbyname (const char * name, const char * proto)
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return NULL;
}
@@ -5651,7 +6489,7 @@ sys_getpeername (int s, struct sockaddr *addr, int * namelen)
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return SOCKET_ERROR;
}
@@ -5663,7 +6501,7 @@ sys_getpeername (int s, struct sockaddr *addr, int * namelen)
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5672,7 +6510,7 @@ sys_shutdown (int s, int how)
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return SOCKET_ERROR;
}
@@ -5684,7 +6522,7 @@ sys_shutdown (int s, int how)
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5693,7 +6531,7 @@ sys_setsockopt (int s, int level, int optname, const void * optval, int optlen)
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return SOCKET_ERROR;
}
@@ -5706,7 +6544,7 @@ sys_setsockopt (int s, int level, int optname, const void * optval, int optlen)
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5715,7 +6553,7 @@ sys_listen (int s, int backlog)
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return SOCKET_ERROR;
}
@@ -5729,7 +6567,7 @@ sys_listen (int s, int backlog)
fd_info[s].flags |= FILE_LISTEN;
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5738,7 +6576,7 @@ sys_getsockname (int s, struct sockaddr * name, int * namelen)
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return SOCKET_ERROR;
}
@@ -5750,7 +6588,7 @@ sys_getsockname (int s, struct sockaddr * name, int * namelen)
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5759,7 +6597,7 @@ sys_accept (int s, struct sockaddr * addr, int * addrlen)
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return -1;
}
@@ -5773,11 +6611,14 @@ sys_accept (int s, struct sockaddr * addr, int * addrlen)
else
fd = socket_to_fd (t);
- fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED;
- ResetEvent (fd_info[s].cp->char_avail);
+ if (fd >= 0)
+ {
+ fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED;
+ ResetEvent (fd_info[s].cp->char_avail);
+ }
return fd;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return -1;
}
@@ -5787,7 +6628,7 @@ sys_recvfrom (int s, char * buf, int len, int flags,
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return SOCKET_ERROR;
}
@@ -5799,7 +6640,7 @@ sys_recvfrom (int s, char * buf, int len, int flags,
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5809,7 +6650,7 @@ sys_sendto (int s, const char * buf, int len, int flags,
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return SOCKET_ERROR;
}
@@ -5821,7 +6662,7 @@ sys_sendto (int s, const char * buf, int len, int flags,
set_errno ();
return rc;
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5832,14 +6673,14 @@ fcntl (int s, int cmd, int options)
{
if (winsock_lib == NULL)
{
- h_errno = ENETDOWN;
+ errno = ENETDOWN;
return -1;
}
check_errno ();
if (fd_info[s].flags & FILE_SOCKET)
{
- if (cmd == F_SETFL && options == O_NDELAY)
+ if (cmd == F_SETFL && options == O_NONBLOCK)
{
unsigned long nblock = 1;
int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock);
@@ -5851,11 +6692,11 @@ fcntl (int s, int cmd, int options)
}
else
{
- h_errno = EINVAL;
+ errno = EINVAL;
return SOCKET_ERROR;
}
}
- h_errno = ENOTSOCK;
+ errno = ENOTSOCK;
return SOCKET_ERROR;
}
@@ -5902,20 +6743,34 @@ sys_close (int fd)
winsock_inuse--; /* count open sockets */
}
- delete_child (cp);
+ /* If the process handle is NULL, it's either a socket
+ or serial connection, or a subprocess that was
+ already reaped by reap_subprocess, but whose
+ resources were not yet freed, because its output was
+ not fully read yet by the time it was reaped. (This
+ usually happens with async subprocesses whose output
+ is being read by Emacs.) Otherwise, this process was
+ not reaped yet, so we set its FD to a negative value
+ to make sure sys_select will eventually get to
+ calling the SIGCHLD handler for it, which will then
+ invoke waitpid and reap_subprocess. */
+ if (cp->procinfo.hProcess == NULL)
+ delete_child (cp);
+ else
+ cp->fd = -1;
}
}
}
+ if (fd >= 0 && fd < MAXDESC)
+ fd_info[fd].flags = 0;
+
/* Note that sockets do not need special treatment here (at least on
NT and Windows 95 using the standard tcp/ip stacks) - it appears that
closesocket is equivalent to CloseHandle, which is to be expected
because socket handles are fully fledged kernel handles. */
rc = _close (fd);
- if (rc == 0 && fd < MAXDESC)
- fd_info[fd].flags = 0;
-
return rc;
}
@@ -5978,6 +6833,7 @@ sys_pipe (int * phandles)
{
_close (phandles[0]);
_close (phandles[1]);
+ errno = EMFILE;
rc = -1;
}
else
@@ -5994,7 +6850,8 @@ sys_pipe (int * phandles)
}
/* Function to do blocking read of one byte, needed to implement
- select. It is only allowed on sockets and pipes. */
+ select. It is only allowed on communication ports, sockets, or
+ pipes. */
int
_sys_read_ahead (int fd)
{
@@ -6050,19 +6907,31 @@ _sys_read_ahead (int fd)
/* Configure timeouts for blocking read. */
if (!GetCommTimeouts (hnd, &ct))
- return STATUS_READ_ERROR;
+ {
+ cp->status = STATUS_READ_ERROR;
+ return STATUS_READ_ERROR;
+ }
ct.ReadIntervalTimeout = 0;
ct.ReadTotalTimeoutMultiplier = 0;
ct.ReadTotalTimeoutConstant = 0;
if (!SetCommTimeouts (hnd, &ct))
- return STATUS_READ_ERROR;
+ {
+ cp->status = STATUS_READ_ERROR;
+ return STATUS_READ_ERROR;
+ }
if (!ReadFile (hnd, &cp->chr, sizeof (char), (DWORD*) &rc, ovl))
{
if (GetLastError () != ERROR_IO_PENDING)
- return STATUS_READ_ERROR;
+ {
+ cp->status = STATUS_READ_ERROR;
+ return STATUS_READ_ERROR;
+ }
if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE))
- return STATUS_READ_ERROR;
+ {
+ cp->status = STATUS_READ_ERROR;
+ return STATUS_READ_ERROR;
+ }
}
}
else if (fd_info[fd].flags & FILE_SOCKET)
@@ -6258,7 +7127,7 @@ sys_read (int fd, char * buffer, unsigned int count)
pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting);
if (waiting == 0 && nchars == 0)
{
- h_errno = errno = EWOULDBLOCK;
+ errno = EWOULDBLOCK;
return -1;
}
@@ -6756,6 +7625,11 @@ globals_of_w32 (void)
g_b_init_get_native_system_info = 0;
g_b_init_get_system_times = 0;
g_b_init_create_symbolic_link = 0;
+ g_b_init_get_security_descriptor_dacl = 0;
+ g_b_init_convert_sd_to_sddl = 0;
+ g_b_init_convert_sddl_to_sd = 0;
+ g_b_init_is_valid_security_descriptor = 0;
+ g_b_init_set_file_security = 0;
num_of_processors = 0;
/* The following sets a handler for shutdown notifications for
console apps. This actually applies to Emacs in both console and
@@ -6765,6 +7639,9 @@ globals_of_w32 (void)
/* "None" is the default group name on standalone workstations. */
strcpy (dflt_group_name, "None");
+
+ /* Reset, in case it has some value inherited from dump time. */
+ w32_stat_get_owner_group = 0;
}
/* For make-serial-process */
@@ -6962,47 +7839,26 @@ serial_configure (struct Lisp_Process *p, Lisp_Object contact)
ssize_t
emacs_gnutls_pull (gnutls_transport_ptr_t p, void* buf, size_t sz)
{
- int n, sc, err;
+ int n, err;
SELECT_TYPE fdset;
EMACS_TIME timeout;
struct Lisp_Process *process = (struct Lisp_Process *)p;
int fd = process->infd;
- for (;;)
- {
- n = sys_read (fd, (char*)buf, sz);
+ n = sys_read (fd, (char*)buf, sz);
- if (n >= 0)
- return n;
+ if (n >= 0)
+ return n;
- err = errno;
+ err = errno;
- if (err == EWOULDBLOCK)
- {
- /* Set a small timeout. */
- timeout = make_emacs_time (1, 0);
- FD_ZERO (&fdset);
- FD_SET ((int)fd, &fdset);
-
- /* Use select with the timeout to poll the selector. */
- sc = select (fd + 1, &fdset, (SELECT_TYPE *)0, (SELECT_TYPE *)0,
- &timeout, NULL);
-
- if (sc > 0)
- continue; /* Try again. */
-
- /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN.
- Also accept select return 0 as an indicator to EAGAIN. */
- if (sc == 0 || errno == EWOULDBLOCK)
- err = EAGAIN;
- else
- err = errno; /* Other errors are just passed on. */
- }
+ /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
+ if (err == EWOULDBLOCK)
+ err = EAGAIN;
- emacs_gnutls_transport_set_errno (process->gnutls_state, err);
+ emacs_gnutls_transport_set_errno (process->gnutls_state, err);
- return -1;
- }
+ return -1;
}
ssize_t