[FFmpeg-cvslog] tools/trasher: Check fseek returns
Michael Niedermayer
git at videolan.org
Sun Feb 22 17:49:56 CET 2015
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Feb 22 16:49:56 2015 +0100| [ca86e91dd660ae9abc4f6eace620061ac695f847] | committer: Michael Niedermayer
tools/trasher: Check fseek returns
Fixes CID733726
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ca86e91dd660ae9abc4f6eace620061ac695f847
---
tools/trasher.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/tools/trasher.c b/tools/trasher.c
index aaa09f4..0b89cfe 100644
--- a/tools/trasher.c
+++ b/tools/trasher.c
@@ -30,6 +30,15 @@ static uint32_t ran(void)
return state = state * 1664525 + 1013904223;
}
+static void checked_seek(FILE *stream, int64_t offset, int whence)
+{
+ offset = fseek(stream, offset, whence);
+ if (offset < 0) {
+ fprintf(stderr, "seek failed\n");
+ exit(1);
+ }
+}
+
int main(int argc, char **argv)
{
FILE *f;
@@ -49,17 +58,14 @@ int main(int argc, char **argv)
maxburst = atoi(argv[3]);
state = atoi(argv[4]);
- fseek(f, 0, SEEK_END);
+ checked_seek(f, 0, SEEK_END);
length = ftell(f);
- fseek(f, 0, SEEK_SET);
+ checked_seek(f, 0, SEEK_SET);
while (count--) {
int burst = 1 + ran() * (uint64_t) (abs(maxburst) - 1) / UINT32_MAX;
int pos = ran() * (uint64_t) length / UINT32_MAX;
- if (fseek(f, pos, SEEK_SET) < 0) {
- fprintf(stderr, "seek failed\n");
- return 1;
- }
+ checked_seek(f, pos, SEEK_SET);
if (maxburst < 0)
burst = -maxburst;
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