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| author | Karel Zak | 2009-03-11 12:49:50 +0100 |
|---|---|---|
| committer | Karel Zak | 2009-03-11 13:37:40 +0100 |
| commit | 841f86dbc2e35166fd43341c8eb144680b0c7ece (patch) | |
| tree | a7d5eba010424d68af19264e8c42c517b38a6e38 /sys-utils/flock.c | |
| parent | cal: remove gcc-ism from nl_langinfo() call (diff) | |
| download | kernel-qcow2-util-linux-841f86dbc2e35166fd43341c8eb144680b0c7ece.tar.gz kernel-qcow2-util-linux-841f86dbc2e35166fd43341c8eb144680b0c7ece.tar.xz kernel-qcow2-util-linux-841f86dbc2e35166fd43341c8eb144680b0c7ece.zip | |
flockc: segfaults when file name is not given
$ flock -s
Segmentation fault
ltrace:
__libc_start_main(0x8048870, 2, 0xbfe9f404, 0x8049070, 0x8049060 <unfinished ...>
getopt_long(2, 0xbfe9f404, "+sexnouw:hV?", 0x80494e0, 0xbfe9f354) = 115
getopt_long(2, 0xbfe9f404, "+sexnouw:hV?", 0x80494e0, 0xbfe9f354) = -1
strtol(0, 0xbfe9f34c, 10, 0x80494e0, 0xbfe9f354 <unfinished ...>
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++
Addresses-Red-Had-Bugzilla: #489672
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/flock.c')
| -rw-r--r-- | sys-utils/flock.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys-utils/flock.c b/sys-utils/flock.c index 029e43647..3386e15b4 100644 --- a/sys-utils/flock.c +++ b/sys-utils/flock.c @@ -217,7 +217,7 @@ int main(int argc, char *argv[]) EX_NOINPUT); } - } else { + } else if (optind < argc) { /* Use provided file descriptor */ fd = (int)strtol(argv[optind], &eon, 10); @@ -226,8 +226,15 @@ int main(int argc, char *argv[]) exit(EX_USAGE); } + } else { + /* Bad options */ + + fprintf(stderr, "%s: requires file descriptor, file or directory\n", + program); + exit(EX_USAGE); } + if ( have_timeout ) { if ( timeout.it_value.tv_sec == 0 && timeout.it_value.tv_usec == 0 ) { |