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g_get_current_dir(): consult PWD first

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Check if the current directory is the same as $PWD.  This matches the
behaviour of the get_current_dir_name() function in glibc.

https://bugzilla.gnome.org/show_bug.cgi?id=705902
This commit is contained in:
Ryan Lortie 2013-12-08 18:18:16 -05:00
parent 0f1579e62c
commit a22f77739d
1 changed files with 13 additions and 1 deletions
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14
glib/gfileutils.c
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@ -2451,6 +2451,11 @@ g_path_get_dirname (const gchar *file_name)
* The encoding of the returned string is system defined.
* On Windows, it is always UTF-8.
*
* Since GLib 2.40, this function will return the value of the "PWD"
* environment variable if it is set and it happens to be the same as
* the current directory. This can make a difference in the case that
* the current directory is the target of a symbolic link.
*
* Returns: the current directory
*/
gchar *
@ -2476,10 +2481,17 @@ g_get_current_dir (void)
return dir;
#else
const gchar *pwd;
gchar *buffer = NULL;
gchar *dir = NULL;
static gulong max_len = 0;
struct stat pwdbuf, dotbuf;
pwd = g_getenv ("PWD");
if (pwd != NULL &&
g_stat (".", &dotbuf) == 0 && g_stat (pwd, &pwdbuf) == 0 &&
dotbuf.st_dev == pwdbuf.st_dev && dotbuf.st_ino == pwdbuf.st_ino)
return g_strdup (pwd);
if (max_len == 0)
max_len = (G_PATH_LENGTH == -1) ? 2048 : G_PATH_LENGTH;