From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36544) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d8pAC-0001uw-2W for qemu-devel@nongnu.org; Thu, 11 May 2017 10:33:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d8pA6-00072S-I9 for qemu-devel@nongnu.org; Thu, 11 May 2017 10:33:56 -0400 From: Kevin Wolf Date: Thu, 11 May 2017 16:32:23 +0200 Message-Id: <1494513181-7900-21-git-send-email-kwolf@redhat.com> In-Reply-To: <1494513181-7900-1-git-send-email-kwolf@redhat.com> References: <1494513181-7900-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PULL 20/58] osdep: Fall back to posix lock when OFD lock is unavailable List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, stefanha@redhat.com, qemu-devel@nongnu.org From: Fam Zheng Signed-off-by: Fam Zheng Signed-off-by: Kevin Wolf --- util/osdep.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/util/osdep.c b/util/osdep.c index 3de4a18..a2863c8 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 -- 1.8.3.1