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-rw-r--r--io/Makefile1
-rw-r--r--io/tst-fcntl-lock.c97
-rw-r--r--io/tst-lockf.c58
-rw-r--r--sysdeps/unix/sysv/linux/bits/fcntl-linux.h2
4 files changed, 133 insertions, 25 deletions
diff --git a/io/Makefile b/io/Makefile
index db886ca..d573064 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -175,6 +175,7 @@ tests := \
tst-fchmodat \
tst-fchownat \
tst-fcntl \
+ tst-fcntl-lock \
tst-fstatat \
tst-fts \
tst-fts-lfs \
diff --git a/io/tst-fcntl-lock.c b/io/tst-fcntl-lock.c
new file mode 100644
index 0000000..357c4b7
--- /dev/null
+++ b/io/tst-fcntl-lock.c
@@ -0,0 +1,97 @@
+/* Test for advisory record locking.
+ Copyright (C) 2023 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+
+/* This is essentially the POSIX lockf. */
+
+static int
+fcntl_lockf (int fd, int cmd, off_t len)
+{
+ struct flock fl = {
+ .l_type = F_WRLCK,
+ .l_whence = SEEK_CUR,
+ .l_len = len
+ };
+
+ switch (cmd)
+ {
+ case F_TEST:
+ fl.l_type = F_RDLCK;
+ if (fcntl (fd, F_GETLK, &fl) < 0)
+ return -1;
+ if (fl.l_type == F_UNLCK || fl.l_pid == getpid ())
+ return 0;
+ errno = EACCES;
+ return -1;
+
+ case F_ULOCK:
+ fl.l_type = F_UNLCK;
+ return fcntl (fd, F_SETLK, &fl);
+
+ case F_LOCK:
+ return fcntl (fd, F_SETLKW, &fl);
+
+ case F_TLOCK:
+ return fcntl (fd, F_SETLK, &fl);
+ }
+
+ errno = EINVAL;
+ return -1;
+}
+
+static int
+fcntl64_lockf (int fd, int cmd, off64_t len64)
+ {
+ struct flock64 fl64 = {
+ .l_type = F_WRLCK,
+ .l_whence = SEEK_CUR,
+ .l_len = len64
+ };
+
+ switch (cmd)
+ {
+ case F_TEST:
+ fl64.l_type = F_RDLCK;
+ if (fcntl64 (fd, F_GETLK64, &fl64) < 0)
+ return -1;
+ if (fl64.l_type == F_UNLCK || fl64.l_pid == getpid ())
+ return 0;
+ errno = EACCES;
+ return -1;
+
+ case F_ULOCK:
+ fl64.l_type = F_UNLCK;
+ return fcntl64 (fd, F_SETLK64, &fl64);
+
+ case F_LOCK:
+ return fcntl64 (fd, F_SETLKW64, &fl64);
+
+ case F_TLOCK:
+ return fcntl64 (fd, F_SETLK64, &fl64);
+ }
+
+ errno = EINVAL;
+ return -1;
+}
+
+#define TST_LOCKFD "tst-fcntl-lock."
+#define LOCKF fcntl_lockf
+#define LOCKF64 fcntl64_lockf
+#include "tst-lockf.c"
diff --git a/io/tst-lockf.c b/io/tst-lockf.c
index eda04b5..cf8d300 100644
--- a/io/tst-lockf.c
+++ b/io/tst-lockf.c
@@ -24,13 +24,23 @@
#include <support/capture_subprocess.h>
#include <support/check.h>
+#ifndef TST_LOCKFD
+# define TST_LOCKFD "tst-lockfd."
+#endif
+#ifndef LOCKF
+# define LOCKF lockf
+#endif
+#ifndef LOCKF64
+# define LOCKF64 lockf64
+#endif
+
static char *temp_filename;
static int temp_fd;
static void
do_prepare (int argc, char **argv)
{
- temp_fd = create_temp_file ("tst-lockfd.", &temp_filename);
+ temp_fd = create_temp_file (TST_LOCKFD, &temp_filename);
TEST_VERIFY_EXIT (temp_fd != -1);
}
#define PREPARE do_prepare
@@ -40,22 +50,22 @@ do_test_child_lockf (void *closure)
{
/* Check if parent has [0, 1024) locked. */
TEST_COMPARE (lseek (temp_fd, 0, SEEK_SET), 0);
- TEST_COMPARE (lockf (temp_fd, F_TLOCK, 1024), -1);
+ TEST_COMPARE (LOCKF (temp_fd, F_TLOCK, 1024), -1);
TEST_COMPARE (errno, EAGAIN);
- TEST_COMPARE (lockf (temp_fd, F_TEST, 1024), -1);
+ TEST_COMPARE (LOCKF (temp_fd, F_TEST, 1024), -1);
TEST_COMPARE (errno, EACCES);
/* Also Check if parent has last 1024 bytes locked. */
TEST_COMPARE (lseek (temp_fd, INT32_MAX-1024, SEEK_SET), INT32_MAX-1024);
- TEST_COMPARE (lockf (temp_fd, F_TEST, 1024), -1);
+ TEST_COMPARE (LOCKF (temp_fd, F_TEST, 1024), -1);
/* And try to lock [1024, 2048). */
TEST_COMPARE (lseek (temp_fd, 1024, SEEK_SET), 1024);
- TEST_COMPARE (lockf (temp_fd, F_LOCK, 1024), 0);
+ TEST_COMPARE (LOCKF (temp_fd, F_LOCK, 1024), 0);
/* Check if non-LFS interface cap access to 32-bif off_t. */
TEST_COMPARE (lseek64 (temp_fd, (off64_t)INT32_MAX, SEEK_SET),
(off64_t)INT32_MAX);
- TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), 0);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), 0);
}
static void
@@ -63,32 +73,32 @@ do_test_child_lockf64 (void *closure)
{
/* Check if parent has [0, 1024) locked. */
TEST_COMPARE (lseek64 (temp_fd, 0, SEEK_SET), 0);
- TEST_COMPARE (lockf64 (temp_fd, F_TLOCK, 1024), -1);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TLOCK, 1024), -1);
TEST_COMPARE (errno, EAGAIN);
- TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), -1);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), -1);
TEST_COMPARE (errno, EACCES);
/* Also Check if parent has last 1024 bytes locked. */
TEST_COMPARE (lseek64 (temp_fd, INT32_MAX-1024, SEEK_SET), INT32_MAX-1024);
- TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), -1);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), -1);
/* And try to lock [1024, 2048). */
TEST_COMPARE (lseek64 (temp_fd, 1024, SEEK_SET), 1024);
- TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
/* And also [INT32_MAX, INT32_MAX+1024). */
{
off64_t off = (off64_t)INT32_MAX;
TEST_COMPARE (lseek64 (temp_fd, off, SEEK_SET), off);
- TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
}
/* Check if [INT32_MAX+1024, INT64_MAX) is locked. */
{
off64_t off = (off64_t)INT32_MAX+1024;
TEST_COMPARE (lseek64 (temp_fd, off, SEEK_SET), off);
- TEST_COMPARE (lockf64 (temp_fd, F_TLOCK, 1024), -1);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TLOCK, 1024), -1);
TEST_COMPARE (errno, EAGAIN);
- TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), -1);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), -1);
TEST_COMPARE (errno, EACCES);
}
}
@@ -97,38 +107,38 @@ static int
do_test (void)
{
/* Basic tests to check if a lock can be obtained and checked. */
- TEST_COMPARE (lockf (temp_fd, F_LOCK, 1024), 0);
- TEST_COMPARE (lockf (temp_fd, F_LOCK, INT32_MAX), 0);
- TEST_COMPARE (lockf (temp_fd, F_TLOCK, 1024), 0);
- TEST_COMPARE (lockf (temp_fd, F_TEST, 1024), 0);
+ TEST_COMPARE (LOCKF (temp_fd, F_LOCK, 1024), 0);
+ TEST_COMPARE (LOCKF (temp_fd, F_LOCK, INT32_MAX), 0);
+ TEST_COMPARE (LOCKF (temp_fd, F_TLOCK, 1024), 0);
+ TEST_COMPARE (LOCKF (temp_fd, F_TEST, 1024), 0);
TEST_COMPARE (lseek (temp_fd, 1024, SEEK_SET), 1024);
- TEST_COMPARE (lockf (temp_fd, F_ULOCK, 1024), 0);
+ TEST_COMPARE (LOCKF (temp_fd, F_ULOCK, 1024), 0);
/* Parent process should have ([0, 1024), [2048, INT32_MAX)) ranges locked. */
{
struct support_capture_subprocess result;
result = support_capture_subprocess (do_test_child_lockf, NULL);
- support_capture_subprocess_check (&result, "lockf", 0, sc_allow_none);
+ support_capture_subprocess_check (&result, "LOCKF", 0, sc_allow_none);
}
if (sizeof (off_t) != sizeof (off64_t))
{
/* Check if previously locked regions with LFS symbol. */
TEST_COMPARE (lseek (temp_fd, 0, SEEK_SET), 0);
- TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
- TEST_COMPARE (lockf64 (temp_fd, F_TLOCK, 1024), 0);
- TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), 0);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TLOCK, 1024), 0);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), 0);
/* Lock region [INT32_MAX+1024, INT64_MAX). */
off64_t off = (off64_t)INT32_MAX + 1024;
TEST_COMPARE (lseek64 (temp_fd, off, SEEK_SET), off);
- TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
+ TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
/* Parent process should have ([0, 1024), [2048, INT32_MAX),
[INT32_MAX+1024, INT64_MAX)) ranges locked. */
{
struct support_capture_subprocess result;
result = support_capture_subprocess (do_test_child_lockf64, NULL);
- support_capture_subprocess_check (&result, "lockf", 0, sc_allow_none);
+ support_capture_subprocess_check (&result, "LOCKF", 0, sc_allow_none);
}
}
diff --git a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
index ca6a0d7..1babbdc 100644
--- a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
+++ b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
@@ -101,7 +101,7 @@
#endif
#ifndef F_GETLK
-# ifndef __USE_FILE_OFFSET64
+# if !defined __USE_FILE_OFFSET64 && __TIMESIZE != 64
# define F_GETLK 5 /* Get record locking info. */
# define F_SETLK 6 /* Set record locking info (non-blocking). */
# define F_SETLKW 7 /* Set record locking info (blocking). */
generated by cgit v1.1 at 2024-11-05 03:22:27 +0000