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Make important improvements

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- Fix preadv() and pwritev() for old distros
- Introduce _npassert() and _unassert() macros
- Prove that file locks work properly on Windows
- Support fcntl(F_DUPFD_CLOEXEC) on more systems
This commit is contained in:
Justine Tunney 2022-09-14 21:29:50 -07:00
parent 1ad2f530f9
commit 3f49889841
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GPG key ID: BE714B4575D6E328
130 changed files with 1225 additions and 431 deletions
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79
test/libc/calls/fcntl_test.c
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@ -30,8 +30,29 @@
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/thread.h"
#include "libc/x/x.h"
int Lock(int fd, int type, long start, long len) {
int e;
struct flock lock = {
.l_type = type,
.l_whence = SEEK_SET,
.l_start = start,
.l_len = len,
};
e = errno;
while (fcntl(fd, F_SETLK, &lock)) {
if (errno == EAGAIN || errno == EACCES) {
errno = e;
continue;
} else {
return -1;
}
}
return 0;
}
char testlib_enable_tmp_setup_teardown;
TEST(fcntl_getfl, testRemembersAccessMode) {
@ -70,59 +91,15 @@ TEST(fcntl, getfd) {
ASSERT_SYS(0, 0, close(3));
}
void OnSig(int sig) {
TEST(fcntl, F_DUPFD_CLOEXEC) {
ASSERT_SYS(0, 3, open("/dev/null", O_RDWR));
ASSERT_SYS(0, 5, fcntl(3, F_DUPFD_CLOEXEC, 5));
ASSERT_SYS(0, FD_CLOEXEC, fcntl(5, F_GETFD));
ASSERT_SYS(0, 0, close(5));
ASSERT_SYS(0, 0, close(3));
}
TEST(posixAdvisoryLocks, oneProcess_unlockedFromOwnPerspectiveHuh) {
struct flock lock;
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 5, write(3, "hello", 5));
// set lock
lock.l_type = F_WRLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 1;
lock.l_len = 3;
lock.l_pid = -2;
ASSERT_SYS(0, 0, fcntl(3, F_SETLK, &lock));
EXPECT_EQ(F_WRLCK, lock.l_type);
EXPECT_EQ(SEEK_SET, lock.l_whence);
EXPECT_EQ(1, lock.l_start);
EXPECT_EQ(3, lock.l_len);
EXPECT_EQ(-2, lock.l_pid);
ASSERT_SYS(0, 4, open("foo", O_RDWR));
// try lock
lock.l_type = F_WRLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 0;
lock.l_len = 0;
lock.l_pid = -1;
ASSERT_SYS(0, 0, fcntl(4, F_SETLK, &lock));
EXPECT_EQ(F_WRLCK, lock.l_type);
EXPECT_EQ(SEEK_SET, lock.l_whence);
EXPECT_EQ(0, lock.l_start);
EXPECT_EQ(0, lock.l_len);
EXPECT_EQ(-1, lock.l_pid);
// get lock information
if (!IsWindows()) {
lock.l_type = F_RDLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 0;
lock.l_len = 0;
lock.l_pid = -7;
ASSERT_SYS(0, 0, fcntl(4, F_GETLK, &lock));
EXPECT_EQ(F_UNLCK, lock.l_type);
EXPECT_EQ(SEEK_SET, lock.l_whence);
EXPECT_EQ(0, lock.l_start);
EXPECT_EQ(0, lock.l_len);
EXPECT_EQ(-7, lock.l_pid); // doesn't change due to F_UNLCK
}
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
void OnSig(int sig) {
}
TEST(posixAdvisoryLocks, twoProcesses) {