diff options
Diffstat (limited to 'tests/bugs/getlk_owner.c')
-rw-r--r-- | tests/bugs/getlk_owner.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/tests/bugs/getlk_owner.c b/tests/bugs/getlk_owner.c new file mode 100644 index 00000000000..619c2e32d98 --- /dev/null +++ b/tests/bugs/getlk_owner.c @@ -0,0 +1,120 @@ +#include <stdio.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> + +#define GETLK_OWNER_CHECK(f, cp, label) \ + do { \ + switch (f.l_type) { \ + case F_RDLCK: \ + case F_WRLCK: \ + ret = 1; \ + goto label; \ + case F_UNLCK: \ + if (!are_flocks_sane (&f, &cp)) { \ + ret = 1; \ + goto label; \ + } \ + break; \ + } \ + } while (0) + +void +flock_init (struct flock *f, short int type, off_t start, off_t len) +{ + f->l_type = type; + f->l_start = start; + f->l_len = len; +} + +int +flock_cp (struct flock *dst, struct flock *src) +{ + memcpy ((void *) dst, (void *) src, sizeof (struct flock)); +} + +int +are_flocks_sane (struct flock *src, struct flock *cpy) +{ + return ((src->l_whence == cpy->l_whence) && + (src->l_start == cpy->l_start) && + (src->l_len == cpy->l_len)); +} + +/* + * Test description: + * SETLK (0,3), F_WRLCK + * SETLK (3,3), F_WRLCK + * + * the following GETLK requests must return flock struct unmodified + * except for l_type to F_UNLCK + * GETLK (3,3), F_WRLCK + * GETLK (3,3), F_RDLCK + * + * */ + +int main (int argc, char **argv) +{ + int fd = -1; + int ret = 1; + char *fname = NULL; + struct flock f = {0,}; + struct flock cp = {0,}; + + if (argc < 2) + goto out; + + fname = argv[1]; + fd = open (fname, O_RDWR); + if (fd == -1) { + perror ("open"); + goto out; + } + + flock_init (&f, F_WRLCK, 0, 3); + flock_cp (&cp, &f); + ret = fcntl (fd, F_SETLK, &f); + if (ret) { + perror ("fcntl"); + goto out; + } + if (!are_flocks_sane (&f, &cp)) { + ret = 1; + goto out; + } + + flock_init (&f, F_WRLCK, 3, 3); + flock_cp (&cp, &f); + ret = fcntl (fd, F_SETLK, &f); + if (ret) { + perror ("fcntl"); + goto out; + } + if (!are_flocks_sane (&f, &cp)) { + ret = 1; + goto out; + } + + flock_init (&f, F_WRLCK, 3, 3); + flock_cp (&cp, &f); + ret = fcntl (fd, F_GETLK, &f); + if (ret) { + perror ("fcntl"); + return 1; + } + GETLK_OWNER_CHECK (f, cp, out); + + flock_init (&f, F_RDLCK, 3, 3); + flock_cp (&cp, &f); + ret = fcntl (fd, F_GETLK, &f); + if (ret) { + perror ("fcntl"); + return 1; + } + GETLK_OWNER_CHECK (f, cp, out); + +out: + if (fd != -1) + close (fd); + return ret; +} |