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libtt: Avoid an infinite loop in ttsession (tooltalk daemon) when /etc/mtab is a symlink, using lstat instead of stat.

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Patch from Frederic Koehler <f.koehler427@gmail.com>
This commit is contained in:
Jon Trulson
2012-08-08 11:36:03 -06:00
parent a7562a8009
commit b49872206b
1 changed files with 3 additions and 2 deletions
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5
cde/lib/tt/lib/util/tt_file_system.C
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@@ -427,9 +427,10 @@ updateFileSystemEntries ()
pollfd poll_fd; pollfd poll_fd;
while (mount_table_stat.st_size == 0) { while (mount_table_stat.st_size == 0) {
(void)poll (&poll_fd, 0, 100); (void)poll (&poll_fd, 0, 100);
if (stat(TtMntTab, &mount_table_stat)) { // Must use lstat here; mtab is often a symlink
if (lstat(TtMntTab, &mount_table_stat)) {
return; return;
} }
} }
FILE *mount_table = ttOpenMntTbl(TtMntTab, "r"); FILE *mount_table = ttOpenMntTbl(TtMntTab, "r");