diff options
author | Vincent Bernat <vincent@bernat.im> | 2015-08-15 14:07:44 +0200 |
---|---|---|
committer | Eric Van Hensbergen <ericvh@gmail.com> | 2015-08-23 14:21:36 -0500 |
commit | b5ac1fb2717e48177d3f73f9e4c9b556c0a24c6b (patch) | |
tree | 78aa2dda3eaae2b11d3775ccd0a8aa0f2cd28646 /kernel/compat.c | |
parent | cb9af418598b8f388844e1849014c689a048ce54 (diff) | |
download | linux-b5ac1fb2717e48177d3f73f9e4c9b556c0a24c6b.tar.bz2 |
9p: fix return code of read() when count is 0
When reading 0 bytes from an empty file on a 9P filesystem, the return
code of read() was not 0 as expected due to an unitialized err variable.
Tested with this simple program:
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
int main(int argc, const char **argv)
{
assert(argc == 2);
char buffer[256];
int fd = open(argv[1], O_RDONLY|O_NOCTTY);
assert(fd >= 0);
assert(read(fd, buffer, 0) == 0);
return 0;
}
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'kernel/compat.c')
0 files changed, 0 insertions, 0 deletions