6c848529cb
Change-Id: I666664895fdd7c7199797796819e652557a7ac99 BUG: 834465 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/4525 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#include <sys/file.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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int
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main (int argc, char *argv[])
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{
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int fd = -1;
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char *filename = NULL;
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struct flock lock = {0, };
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int i = 0;
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int ret = -1;
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if (argc != 2) {
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fprintf (stderr, "Usage: %s <filename> ", argv[0]);
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goto out;
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}
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filename = argv[1];
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fd = open (filename, O_RDWR | O_CREAT, 0);
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if (fd < 0) {
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fprintf (stderr, "open (%s) failed (%s)\n", filename,
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strerror (errno));
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goto out;
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}
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lock.l_type = F_WRLCK;
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lock.l_whence = SEEK_SET;
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lock.l_start = 1;
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lock.l_len = 1;
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while (i < 100) {
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lock.l_type = F_WRLCK;
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ret = fcntl (fd, F_SETLK, &lock);
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if (ret < 0) {
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fprintf (stderr, "fcntl setlk failed (%s)\n",
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strerror (errno));
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goto out;
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}
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lock.l_type = F_UNLCK;
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ret = fcntl (fd, F_SETLK, &lock);
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if (ret < 0) {
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fprintf (stderr, "fcntl setlk failed (%s)\n",
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strerror (errno));
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goto out;
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}
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i++;
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}
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ret = 0;
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out:
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return ret;
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}
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