diff options
| author | Fam Zheng <famz@redhat.com> | 2017-05-03 00:35:55 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-05-11 11:15:32 +0200 |
| commit | e8c1094a0ee081f30ec9716593e7a90ee88623a1 (patch) | |
| tree | d3c2cd7edfb60aa76e6797276e41f3e8d7bcd8c7 /util/osdep.c | |
| parent | 13461fdba6588540c99bf1e32275e421da22c396 (diff) | |
osdep: Fall back to posix lock when OFD lock is unavailable
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'util/osdep.c')
| -rw-r--r-- | util/osdep.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/util/osdep.c b/util/osdep.c index 3de4a1826c..a2863c8e53 100644 --- a/util/osdep.c +++ b/util/osdep.c @@ -38,6 +38,14 @@ extern int madvise(caddr_t, size_t, int); #include "qemu/error-report.h" #include "monitor/monitor.h" +#ifdef F_OFD_SETLK +#define QEMU_SETLK F_OFD_SETLK +#define QEMU_GETLK F_OFD_GETLK +#else +#define QEMU_SETLK F_SETLK +#define QEMU_GETLK F_GETLK +#endif + static bool fips_enabled = false; static const char *hw_version = QEMU_HW_VERSION; @@ -143,7 +151,6 @@ static int qemu_parse_fdset(const char *param) static int qemu_lock_fcntl(int fd, int64_t start, int64_t len, int fl_type) { -#ifdef F_OFD_SETLK int ret; struct flock fl = { .l_whence = SEEK_SET, @@ -151,11 +158,8 @@ static int qemu_lock_fcntl(int fd, int64_t start, int64_t len, int fl_type) .l_len = len, .l_type = fl_type, }; - ret = fcntl(fd, F_OFD_SETLK, &fl); + ret = fcntl(fd, QEMU_SETLK, &fl); return ret == -1 ? -errno : 0; -#else - return -ENOTSUP; -#endif } int qemu_lock_fd(int fd, int64_t start, int64_t len, bool exclusive) @@ -170,7 +174,6 @@ int qemu_unlock_fd(int fd, int64_t start, int64_t len) int qemu_lock_fd_test(int fd, int64_t start, int64_t len, bool exclusive) { -#ifdef F_OFD_SETLK int ret; struct flock fl = { .l_whence = SEEK_SET, @@ -178,15 +181,12 @@ int qemu_lock_fd_test(int fd, int64_t start, int64_t len, bool exclusive) .l_len = len, .l_type = exclusive ? F_WRLCK : F_RDLCK, }; - ret = fcntl(fd, F_OFD_GETLK, &fl); + ret = fcntl(fd, QEMU_GETLK, &fl); if (ret == -1) { return -errno; } else { return fl.l_type == F_UNLCK ? 0 : -EAGAIN; } -#else - return -ENOTSUP; -#endif } #endif |