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Include sys/types.h, sys/stat.h, and errno.h.

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(IS_DIRECTORY_SEP): New macro.
(convert_time, is_exec, stat): New functions.
This commit is contained in:
Eli Zaretskii 2008-05-09 20:37:32 +00:00
parent 6877092ed6
commit 10fea9c4d2
2 changed files with 153 additions and 0 deletions
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6
lib-src/ChangeLog
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@ -1,3 +1,9 @@
2008-05-09 Eli Zaretskii <eliz@gnu.org>
* ntlib.c: Include sys/types.h, sys/stat.h, and errno.h.
(IS_DIRECTORY_SEP): New macro.
(convert_time, is_exec, stat): New functions.
2008-05-08 Eli Zaretskii <eliz@gnu.org>
* makefile.w32-in (lisp2): Rename epa-file-hook.elc to epa-hook.elc.

147
lib-src/ntlib.c
View file

@ -27,6 +27,9 @@ Boston, MA 02110-1301, USA.
#include <stdio.h>
#include <time.h>
#include <direct.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include "ntlib.h"
@ -210,5 +213,149 @@ sys_chdir (const char * path)
return _chdir (path);
}
static FILETIME utc_base_ft;
static long double utc_base;
static int init = 0;
static time_t
convert_time (FILETIME ft)
{
long double ret;
if (CompareFileTime (&ft, &utc_base_ft) < 0)
return 0;
ret = (long double) ft.dwHighDateTime
* 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime;
ret -= utc_base;
return (time_t) (ret * 1e-7L);
}
static int
is_exec (const char * name)
{
char * p = strrchr (name, '.');
return
(p != NULL
&& (stricmp (p, ".exe") == 0 ||
stricmp (p, ".com") == 0 ||
stricmp (p, ".bat") == 0 ||
stricmp (p, ".cmd") == 0));
}
#define IS_DIRECTORY_SEP(x) ((x) == '/' || (x) == '\\')
/* We need this because nt/inc/sys/stat.h defines struct stat that is
incompatible with the MS run-time libraries. */
int
stat (const char * path, struct stat * buf)
{
WIN32_FIND_DATA wfd;
HANDLE fh;
int permission;
int len;
int rootdir = FALSE;
char *name = alloca (FILENAME_MAX);
if (!init)
{
/* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
SYSTEMTIME st;
st.wYear = 1970;
st.wMonth = 1;
st.wDay = 1;
st.wHour = 0;
st.wMinute = 0;
st.wSecond = 0;
st.wMilliseconds = 0;
SystemTimeToFileTime (&st, &utc_base_ft);
utc_base = (long double) utc_base_ft.dwHighDateTime
* 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime;
init = 1;
}
if (path == NULL || buf == NULL || *path == '\0')
{
errno = EFAULT;
return -1;
}
if (_mbspbrk (path, "*?|<>\""))
{
errno = ENOENT;
return -1;
}
strcpy (name, path);
/* Remove trailing directory separator, unless name is the root
directory of a drive in which case ensure there is a trailing
separator. */
len = strlen (name);
rootdir = IS_DIRECTORY_SEP (name[0])
|| (len == 3 && name[1] == ':' && IS_DIRECTORY_SEP (name[2]));
if (rootdir)
{
if (GetDriveType (name) < 2)
{
errno = ENOENT;
return -1;
}
memset (&wfd, 0, sizeof (wfd));
wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY;
wfd.ftCreationTime = utc_base_ft;
wfd.ftLastAccessTime = utc_base_ft;
wfd.ftLastWriteTime = utc_base_ft;
strcpy (wfd.cFileName, name);
}
else
{
if (IS_DIRECTORY_SEP (name[len-1]))
name[len - 1] = 0;
fh = FindFirstFile (name, &wfd);
if (fh == INVALID_HANDLE_VALUE)
{
errno = ENOENT;
return -1;
}
FindClose (fh);
}
buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ?
S_IFDIR : S_IFREG;
buf->st_nlink = 1;
buf->st_ino = 0;
if (name[0] && name[1] == ':')
buf->st_dev = tolower (name[0]) - 'a' + 1;
else
buf->st_dev = _getdrive ();
buf->st_rdev = buf->st_dev;
buf->st_size = wfd.nFileSizeLow;
/* Convert timestamps to Unix format. */
buf->st_mtime = convert_time (wfd.ftLastWriteTime);
buf->st_atime = convert_time (wfd.ftLastAccessTime);
if (buf->st_atime == 0) buf->st_atime = buf->st_mtime;
buf->st_ctime = convert_time (wfd.ftCreationTime);
if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime;
/* determine rwx permissions */
if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
permission = S_IREAD;
else
permission = S_IREAD | S_IWRITE;
if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
permission |= S_IEXEC;
else if (is_exec (name))
permission |= S_IEXEC;
buf->st_mode |= permission | (permission >> 3) | (permission >> 6);
return 0;
}
/* arch-tag: 7b63fb83-70ee-4124-8822-54e53e5d0773
(do not change this comment) */