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* path.h (has_exec_chars): Standard function for checking for executable magic 

numbers.
* path.cc (symlink_info::check): Use the above function.
* fhandler.cc (fhandler_disk_file::open): Ditto.
This commit is contained in:
Christopher Faylor 2000-10-31 23:14:29 +00:00
parent 772e2322bd
commit b12796a06d
4 changed files with 22 additions and 6 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
Tue Oct 31 18:12:56 2000 Christopher Faylor <cgf@cygnus.com>
* path.h (has_exec_chars): Standard function for checking for
executable magic numbers.
* path.cc (symlink_info::check): Use the above function.
* fhandler.cc (fhandler_disk_file::open): Ditto.
Tue Oct 31 17:57:52 2000 Christopher Faylor <cgf@cygnus.com>
* path.cc (_readlink): Return ENOENT when file does not exist.

3
winsup/cygwin/fhandler.cc
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@ -1227,8 +1227,7 @@ fhandler_disk_file::open (path_conv& real_path, int flags, mode_t mode)
/* FIXME should we use /etc/magic ? */
magic[0] = magic[1] = magic[2] = '\0';
ReadFile (get_handle (), magic, 3, &done, 0);
if ((magic[0] == ':' && magic[1] == '\n') ||
(magic[0] == '#' && magic[1] == '!'))
if (has_exec_chars (magic, done))
real_path.set_exec ();
if (!(flags & O_APPEND))
SetFilePointer (get_handle(), 0, 0, FILE_BEGIN);

9
winsup/cygwin/path.cc
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@ -2319,11 +2319,12 @@ symlink_info::check (const char *in_path, const suffix_info *suffixes)
else
{
/* Not a symlink, see if executable. */
if (!(pflags & PATH_ALL_EXEC) && got >= 2 &&
((cookie_buf[0] == '#' && cookie_buf[1] == '!') ||
(cookie_buf[0] == ':' && cookie_buf[1] == '\n') ||
(cookie_buf[0] == 'M' && cookie_buf[1] == 'Z')))
if (!(pflags & PATH_ALL_EXEC) &&
has_exec_chars (cookie_buf, got))
{
debug_printf ("setting exec flag");
pflags |= PATH_EXEC;
}
close_and_return:
CloseHandle (h);
goto file_not_symlink;

9
winsup/cygwin/path.h
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@ -122,6 +122,15 @@ const char * __stdcall find_exec (const char *name, path_conv& buf, const char *
#define isdrive(s) (isalpha (*(s)) && (s)[1] == ':')
static inline bool
has_exec_chars (const char *buf, int len)
{
return len >= 2 &&
((buf[0] == '#' && buf[1] == '!') ||
(buf[0] == ':' && buf[1] == '\n') ||
(buf[0] == 'M' && buf[1] == 'Z'));
}
/* cwd cache stuff. */
class muto;