From: Andreas Schwab <schwab@redhat.com>
To: libc-hacker@sourceware.org
Subject: [PATCH] ldconfig: don't crash on empty path in config file
Date: Tue, 03 May 2011 14:57:00 -0000 [thread overview]
Message-ID: <m339kvde8g.fsf@redhat.com> (raw)
2011-05-03 Andreas Schwab <schwab@redhat.com>
* elf/ldconfig.c (add_dir): Don't crash on empty path.
---
elf/ldconfig.c | 15 +++++++++------
1 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/elf/ldconfig.c b/elf/ldconfig.c
index 1b2eaa3..751b49b 100644
--- a/elf/ldconfig.c
+++ b/elf/ldconfig.c
@@ -384,14 +384,17 @@ add_dir (const char *line)
}
/* Canonify path: for now only remove leading and trailing
- whitespace and the trailing slashes slashes. */
- i = strlen (entry->path) - 1;
+ whitespace and the trailing slashes. */
+ i = strlen (entry->path);
- while (isspace (entry->path[i]) && i > 0)
- entry->path[i--] = '\0';
+ while (i > 0 && isspace (entry->path[i - 1]))
+ entry->path[--i] = '\0';
- while (entry->path[i] == '/' && i > 0)
- entry->path[i--] = '\0';
+ while (i > 0 && entry->path[i - 1] == '/')
+ entry->path[--i] = '\0';
+
+ if (i == 0)
+ return;
char *path = entry->path;
if (opt_chroot)
--
1.7.4.4
--
Andreas Schwab, schwab@redhat.com
GPG Key fingerprint = D4E8 DBE3 3813 BB5D FA84 5EC7 45C6 250E 6F00 984E
"And now for something completely different."
reply other threads:[~2011-05-03 14:57 UTC|newest]
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