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test: explicitly ignore return value of most syscalls
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@ldorau
ldorau committed Sep 29, 2017
1 parent 58bad9f commit 214349c
Showing 1 changed file with 97 additions and 84 deletions.
181 changes: 97 additions & 84 deletions test/test_syscalls.c
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Original file line number Diff line number Diff line change
Expand Up @@ -78,8 +78,8 @@
#define PATTERN_END ((int)0x87654321)
#define BUF_SIZE 0x100

#define MARK_START() close(PATTERN_START)
#define MARK_END() close(PATTERN_END)
#define MARK_START() (void) close(PATTERN_START)
#define MARK_END() (void) close(PATTERN_END)

#define FILE_EXIST "/etc/fstab"
#define FILE_CREATE "/tmp/tmp vltrace"
Expand Down Expand Up @@ -175,51 +175,52 @@ test_basic_syscalls(void)
s();
fd = open(FILE_EXIST, O_RDONLY);
s();
close(fd);
(void) close(fd);

s();
fd = open(FILE_CREATE, O_RDWR | O_CREAT, 0666);
s();
write(fd, buffer, BUF_SIZE);
(void) write(fd, buffer, BUF_SIZE);
s();
lseek(fd, 0, SEEK_SET);
(void) lseek(fd, 0, SEEK_SET);
s();
read(fd, buffer, BUF_SIZE);
(void) read(fd, buffer, BUF_SIZE);
s();
fstat(fd, &buf);
(void) fstat(fd, &buf);
s();
close(fd);
(void) close(fd);
s();
unlink(FILE_CREATE);
(void) unlink(FILE_CREATE);

s();
execve(FILE_CREATE, (char * const *)0x123456, (char * const *)0x654321);
(void) execve(FILE_CREATE, (char * const *)0x123456,
(char * const *)0x654321);

s();
stat(FILE_EXIST, &buf);
(void) stat(FILE_EXIST, &buf);
s();
lstat(FILE_EXIST, &buf);
(void) lstat(FILE_EXIST, &buf);

s();
uname(&name);
(void) uname(&name);

s();
syscall(SYS_getpid); /* getpid */
(void) syscall(SYS_getpid); /* getpid */
s();
syscall(SYS_gettid); /* gettid */
(void) syscall(SYS_gettid); /* gettid */

/* PART #2 - test arguments */

s();
write(0x101, buffer, 1);
(void) write(0x101, buffer, 1);
s();
read(0x102, buffer, 2);
(void) read(0x102, buffer, 2);
s();
lseek(0x103, 3, SEEK_END);
(void) lseek(0x103, 3, SEEK_END);
s();
fstat(0x104, &buf);
(void) fstat(0x104, &buf);
s();
syscall(SYS_futex, 1, FUTEX_WAKE_OP, 3, 4, 5, FLAGS_SET); /* futex */
(void) syscall(SYS_futex, 1, FUTEX_WAKE_OP, 3, 4, 5, FLAGS_SET);
s();
}

Expand All @@ -232,126 +233,133 @@ test_unsupported_syscalls(void)
char buf[BUF_SIZE];

s();
chroot(NON_EXIST_PATH_1);
(void) chroot(NON_EXIST_PATH_1);

/* fcntl - unsupported flags */
s();
syscall(SYS_fcntl, 0x104, FLAGS_SET, FLAGS_SET, 0x105, 0x106, 0x107);
(void) syscall(SYS_fcntl, 0x104, FLAGS_SET, FLAGS_SET, 0x105, 0x106,
0x107);

s();
flock(0x108, 0x109);
(void) flock(0x108, 0x109);

s();
setsockopt(0x101, 0x102, 0x103, (void *)0x104, (socklen_t)0x105);
(void) setsockopt(0x101, 0x102, 0x103, (void *)0x104, (socklen_t)0x105);
s();
getsockopt(0x106, 0x107, 0x108, (void *)0x109, (socklen_t *)0x110);
(void) getsockopt(0x106, 0x107, 0x108, (void *)0x109,
(socklen_t *)0x110);
s();
struct sockaddr addr;
socklen_t addrlen = sizeof(addr);
getsockname(0x101, &addr, &addrlen);
(void) getsockname(0x101, &addr, &addrlen);
s();
inotify_add_watch(0x104, NON_EXIST_PATH_1, 0x105);
(void) inotify_add_watch(0x104, NON_EXIST_PATH_1, 0x105);
s();
inotify_rm_watch(0x106, 0x107);
(void) inotify_rm_watch(0x106, 0x107);

s();
syscall(SYS_io_cancel, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);
(void) syscall(SYS_io_cancel, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);
s();
syscall(SYS_io_destroy, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107);
(void) syscall(SYS_io_destroy, 0x102, 0x103, 0x104, 0x105, 0x106,
0x107);
s();
syscall(SYS_io_getevents, 0x103, 0x104, 0x105, 0x106, 0x107, 0x108);
(void) syscall(SYS_io_getevents, 0x103, 0x104, 0x105, 0x106, 0x107,
0x108);
s();
syscall(SYS_io_setup, 0x104, 0x105, 0x106, 0x107, 0x108, 0x109);
(void) syscall(SYS_io_setup, 0x104, 0x105, 0x106, 0x107, 0x108, 0x109);
s();
syscall(SYS_io_submit, 0x105, 0x106, 0x107, 0x108, 0x109, 0x110);
(void) syscall(SYS_io_submit, 0x105, 0x106, 0x107, 0x108, 0x109, 0x110);

s();
syscall(SYS_ioctl, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);
(void) syscall(SYS_ioctl, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);

s();
mknod(FILE_EXIST, 0x101, 0x102);
(void) mknod(FILE_EXIST, 0x101, 0x102);
s();
mknodat(0x103, FILE_EXIST, 0x104, 0x105);
(void) mknodat(0x103, FILE_EXIST, 0x104, 0x105);

s();
mmap((void *)0x101, 0x102, 0x103, 0xFFFF, 0x105, 0x106);
(void) mmap((void *)0x101, 0x102, 0x103, 0xFFFF, 0x105, 0x106);
s();
munmap((void *)0x102, 0x103);
(void) munmap((void *)0x102, 0x103);

struct timeval time1;
struct timespec time2;
memset(&time1, 0, sizeof(time1));
memset(&time2, 0, sizeof(time2));

s();
select(0, (fd_set *)0x104, (fd_set *)0x105, (fd_set *)0x106, &time1);
(void) select(0, (fd_set *)0x104, (fd_set *)0x105, (fd_set *)0x106,
&time1);
s();
pselect(0, (fd_set *)0x105, (fd_set *)0x106, (fd_set *)0x107, &time2,
(const sigset_t *)0x108);
(void) pselect(0, (fd_set *)0x105, (fd_set *)0x106, (fd_set *)0x107,
&time2, (const sigset_t *)0x108);

s();
swapon(NON_EXIST_PATH_1, 0x101);
(void) swapon(NON_EXIST_PATH_1, 0x101);
s();
swapoff(NON_EXIST_PATH_2);
(void) swapoff(NON_EXIST_PATH_2);

s();
syscall(SYS_poll, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107);
(void) syscall(SYS_poll, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107);

s();
mount(NON_EXIST_PATH_1, NON_EXIST_PATH_2, "ext3", 0x101, (void *)0x102);
(void) mount(NON_EXIST_PATH_1, NON_EXIST_PATH_2, "ext3", 0x101,
(void *)0x102);
s();
umount(NON_EXIST_PATH_1);
(void) umount(NON_EXIST_PATH_1);
s();
umount2(NON_EXIST_PATH_2, 0x123);
(void) umount2(NON_EXIST_PATH_2, 0x123);

s();
setxattr(NON_EXIST_PATH_1, ANY_STR, buf, BUF_SIZE, XATTR_CREATE);
(void) setxattr(NON_EXIST_PATH_1, ANY_STR, buf, BUF_SIZE, XATTR_CREATE);
s();
lsetxattr(NON_EXIST_PATH_2, ANY_STR, buf, BUF_SIZE, XATTR_CREATE);
(void) lsetxattr(NON_EXIST_PATH_2, ANY_STR, buf, BUF_SIZE,
XATTR_CREATE);
s();
fsetxattr(0x107, ANY_STR, buf, BUF_SIZE, XATTR_CREATE);
(void) fsetxattr(0x107, ANY_STR, buf, BUF_SIZE, XATTR_CREATE);

s();
getxattr(NON_EXIST_PATH_1, ANY_STR, buf, BUF_SIZE);
(void) getxattr(NON_EXIST_PATH_1, ANY_STR, buf, BUF_SIZE);
s();
lgetxattr(NON_EXIST_PATH_2, ANY_STR, buf, BUF_SIZE);
(void) lgetxattr(NON_EXIST_PATH_2, ANY_STR, buf, BUF_SIZE);
s();
fgetxattr(0x105, ANY_STR, buf, BUF_SIZE);
(void) fgetxattr(0x105, ANY_STR, buf, BUF_SIZE);

s();
listxattr(NON_EXIST_PATH_1, ANY_STR, 0x101);
(void) listxattr(NON_EXIST_PATH_1, ANY_STR, 0x101);
s();
llistxattr(NON_EXIST_PATH_2, ANY_STR, 0x102);
(void) llistxattr(NON_EXIST_PATH_2, ANY_STR, 0x102);
s();
flistxattr(0x103, ANY_STR, 0x104);
(void) flistxattr(0x103, ANY_STR, 0x104);

s();
removexattr(NON_EXIST_PATH_1, ANY_STR);
(void) removexattr(NON_EXIST_PATH_1, ANY_STR);
s();
lremovexattr(NON_EXIST_PATH_2, ANY_STR);
(void) lremovexattr(NON_EXIST_PATH_2, ANY_STR);
s();
fremovexattr(0x101, ANY_STR);
(void) fremovexattr(0x101, ANY_STR);

s();
syscall(SYS_ppoll, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);
(void) syscall(SYS_ppoll, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);

s();
epoll_ctl(0x101, 0x102, 0x103, (struct epoll_event *)0x104);
(void) epoll_ctl(0x101, 0x102, 0x103, (struct epoll_event *)0x104);
s();
epoll_wait(0x102, (struct epoll_event *)0x103, 0x104, 0x105);
(void) epoll_wait(0x102, (struct epoll_event *)0x103, 0x104, 0x105);
s();
epoll_pwait(0x103, (struct epoll_event *)0x104, 0x105, 0x106,
(void) epoll_pwait(0x103, (struct epoll_event *)0x104, 0x105, 0x106,
(const sigset_t *)0x107);

/* open - unsupported flags */
s();
syscall(SYS_open, NON_EXIST_PATH_2, FLAGS_SET, FLAGS_SET, FLAGS_SET,
FLAGS_SET, FLAGS_SET);
(void) syscall(SYS_open, NON_EXIST_PATH_2, FLAGS_SET, FLAGS_SET,
FLAGS_SET, FLAGS_SET, FLAGS_SET);

/* clone - unsupported flags */
s();
syscall(SYS_clone, FLAGS_SET, FLAGS_SET, FLAGS_SET, FLAGS_SET,
FLAGS_SET, FLAGS_SET);
(void) syscall(SYS_clone, FLAGS_SET, FLAGS_SET, FLAGS_SET, FLAGS_SET,
FLAGS_SET, FLAGS_SET);

/* vfork - moved to test_4 */
}
Expand All @@ -364,47 +372,50 @@ test_strings(char *string[3])
{
/* string args: 1 (open) */
s();
syscall(SYS_open, string[0], 0x102, 0x103, 0x104, 0x105, 0x106);
(void) syscall(SYS_open, string[0], 0x102, 0x103, 0x104, 0x105, 0x106);

/* string args: 2 (openat) */
s();
syscall(SYS_openat, 0x101, string[1], 0x103, 0x104, 0x105, 0x106);
(void) syscall(SYS_openat, 0x101, string[1], 0x103, 0x104, 0x105,
0x106);

/* string args: 1 2 (rename) */
s();
rename(string[0], string[1]);
(void) rename(string[0], string[1]);

/* string args: 1 2 (llistxattr) */
s();
llistxattr(string[1], string[0], 0x103);
(void) llistxattr(string[1], string[0], 0x103);

/* string args: 1 3 (symlinkat) */
s();
syscall(SYS_symlinkat, string[0], 0x102, string[1]);
(void) syscall(SYS_symlinkat, string[0], 0x102, string[1]);

/* string args: 2 4 (renameat) */
s();
syscall(SYS_renameat, 0x101, string[0], 0x103, string[1]);
(void) syscall(SYS_renameat, 0x101, string[0], 0x103, string[1]);

/* string args: 1 2 3 (mount) */
s();
mount(string[0], string[1], string[2], 0x101, (void *)0x102);
(void) mount(string[0], string[1], string[2], 0x101, (void *)0x102);

/* string args: 1 2 3 (request_key) */
s();
syscall(SYS_request_key, string[0], string[1], string[2], 0x104);
(void) syscall(SYS_request_key, string[0], string[1], string[2], 0x104);

/* string args: 3 (init_module) */
s();
syscall(SYS_init_module, 0x101, 0x102, string[0]);
(void) syscall(SYS_init_module, 0x101, 0x102, string[0]);

/* string args: 4 (kexec_file_load) */
s();
syscall(SYS_kexec_file_load, 0x101, 0x102, 0x103, string[1], 0x105);
(void) syscall(SYS_kexec_file_load, 0x101, 0x102, 0x103, string[1],
0x105);

/* string args: 5 (fanotify_mark) */
s();
syscall(SYS_fanotify_mark, 0x101, 0x102, 0x103, 0x104, string[0]);
(void) syscall(SYS_fanotify_mark, 0x101, 0x102, 0x103, 0x104,
string[0]);
s();
}

Expand Down Expand Up @@ -439,7 +450,7 @@ test_signal(void)

Signalled = 0;

raise(SIGUSR1);
(void) raise(SIGUSR1);

while (Signalled == 0)
sleep(1);
Expand Down Expand Up @@ -501,14 +512,15 @@ static void test_4(char *a, char *b, char *c)
* when vfork is present
*/
s();
syscall(SYS_open, NON_EXIST_PATH_1, 0x101, 0x102, 0x103, 0x104, 0x105);
(void) syscall(SYS_open, NON_EXIST_PATH_1, 0x101, 0x102, 0x103, 0x104,
0x105);
s();
syscall(SYS_close, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);
(void) syscall(SYS_close, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106);

s();
switch (vfork()) {
case 0: /* handle child */
execve(NON_EXIST_PATH_1, (char * const *)0x123456,
(void) execve(NON_EXIST_PATH_1, (char * const *)0x123456,
(char * const *)0x654321);
_exit(1);
case -1:
Expand All @@ -521,9 +533,10 @@ s();
* when vfork is present
*/
s();
syscall(SYS_open, NON_EXIST_PATH_2, 0x102, 0x103, 0x104, 0x105, 0x106);
(void) syscall(SYS_open, NON_EXIST_PATH_2, 0x102, 0x103, 0x104, 0x105,
0x106);
s();
syscall(SYS_close, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107);
(void) syscall(SYS_close, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107);
s();

MARK_END();
Expand Down

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