diff options
Diffstat (limited to 'source3/smbd/oplock_linux.c')
| -rw-r--r-- | source3/smbd/oplock_linux.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/source3/smbd/oplock_linux.c b/source3/smbd/oplock_linux.c index 7fa9b7cb2c..dd772bf6cb 100644 --- a/source3/smbd/oplock_linux.c +++ b/source3/smbd/oplock_linux.c @@ -75,26 +75,33 @@ int linux_set_lease_sighandler(int fd) int linux_setlease(int fd, int leasetype) { int ret; + int saved_errno; + + /* + * Ensure the lease owner is root to allow + * correct delivery of lease-break signals. + */ + + become_root(); /* First set the signal handler. */ if (linux_set_lease_sighandler(fd) == -1) { - return -1; + saved_errno = errno; + ret = -1; + goto out; } ret = fcntl(fd, F_SETLEASE, leasetype); - if (ret == -1 && errno == EACCES) { - set_effective_capability(LEASE_CAPABILITY); - /* - * Bug 8974 - work around Linux kernel bug - * https://bugzilla.kernel.org/show_bug.cgi?id=43336. - * "fcntl(F_SETLEASE) resets signal number when - * called multiple times" - */ - if (linux_set_lease_sighandler(fd) == -1) { - return -1; - } - ret = fcntl(fd, F_SETLEASE, leasetype); + if (ret == -1) { + saved_errno = errno; } + out: + + unbecome_root(); + + if (ret == -1) { + errno = saved_errno; + } return ret; } |