svn commit: r320665 - head/libexec/rtld-elf
Xin LI
delphij at FreeBSD.org
Wed Jul 5 06:12:22 UTC 2017
Author: delphij
Date: Wed Jul 5 06:12:21 2017
New Revision: 320665
URL: https://svnweb.freebsd.org/changeset/base/320665
Log:
In open_binary_fd: when using buffer size for strl* and snprintf,
always use >= instead of > to avoid truncation.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D11474
MFC after: 3 days
Modified:
head/libexec/rtld-elf/rtld.c
Modified: head/libexec/rtld-elf/rtld.c
==============================================================================
--- head/libexec/rtld-elf/rtld.c Wed Jul 5 05:50:36 2017 (r320664)
+++ head/libexec/rtld-elf/rtld.c Wed Jul 5 06:12:21 2017 (r320665)
@@ -5300,14 +5300,14 @@ open_binary_fd(const char *argv0, bool search_in_path)
fd = -1;
errno = ENOENT;
while ((pe = strsep(&pathenv, ":")) != NULL) {
- if (strlcpy(binpath, pe, sizeof(binpath)) >
+ if (strlcpy(binpath, pe, sizeof(binpath)) >=
sizeof(binpath))
continue;
if (binpath[0] != '\0' &&
- strlcat(binpath, "/", sizeof(binpath)) >
+ strlcat(binpath, "/", sizeof(binpath)) >=
sizeof(binpath))
continue;
- if (strlcat(binpath, argv0, sizeof(binpath)) >
+ if (strlcat(binpath, argv0, sizeof(binpath)) >=
sizeof(binpath))
continue;
fd = open(binpath, O_RDONLY | O_CLOEXEC | O_VERIFY);
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