test67: test opening files with O_CLOEXEC
Change-Id: If71e61f830c6d3b5154368e189baa4f70bd73850
This commit is contained in:
Thomas Veerman
parent
a5a4f7183f
commit
c3f77a1f88
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@ -23,11 +23,11 @@ OBJS.test57=test57loop.o
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 \
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21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 \
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41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 \
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61 62 64 65 66
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61 62 64 65 66 67
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PROG+= test$(t)
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.endfor
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PROG+= t10a t11a t11b t40a t40b t40c t40d t40e t40f t60a t60b
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PROG+= t10a t11a t11b t40a t40b t40c t40d t40e t40f t60a t60b t67a t67b
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.include <bsd.own.mk>
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@ -53,5 +53,5 @@ clean: .PHONY .MAKE
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$(MAKE) -C select clean
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rm -rf *.o *.s *.bak test? test?? t10a t11a t11b \
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t40a t40b t40c t40d t40e t40f \
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t60a t60b \
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t60a t60b t67a t67b \
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DIR*
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33
test/t67a.c
Normal file
33
test/t67a.c
Normal file
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@ -0,0 +1,33 @@
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main(int argc, char *argv[])
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{
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int fd, fd_parent;
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char buf[1];
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if (argc != 2) {
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return 1;
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}
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fd_parent = atoi(argv[1]);
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/* If we open a new file, the fd we obtain should be fd_parent + 1 */
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fd = open("open_plusplus_fd", O_CREAT|O_RDWR);
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if (fd != fd_parent + 1) {
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return 2;
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}
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/* Also, writing to fd_parent should succeed */
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if (write(fd_parent, buf, sizeof(buf)) <= 0) {
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return 3;
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}
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return 0;
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}
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35
test/t67b.c
Normal file
35
test/t67b.c
Normal file
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@ -0,0 +1,35 @@
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main(int argc, char *argv[])
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{
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int fd, fd_parent;
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char buf[1];
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if (argc != 2) {
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return 1;
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}
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fd_parent = atoi(argv[1]);
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/* Writing to fd_parent should fail as it has to be closed at this
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* point */
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if (write(fd_parent, buf, sizeof(buf)) != -1) {
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return 2;
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}
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/* If we open a new file, the fd we obtain should be identical to
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* fd_parent */
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fd = open("open_identical_fd", O_CREAT|O_RDWR);
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if (fd != fd_parent) {
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return 3;
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}
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return 0;
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}
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128
test/test67.c
Normal file
128
test/test67.c
Normal file
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@ -0,0 +1,128 @@
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define MAX_ERROR 5
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#include "common.c"
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static int fd = 0;
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void copy_subtests(void);
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void test_open_cloexec(void);
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void test_open_fork(void);
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void
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copy_subtests()
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{
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char *subtests[] = { "t67a", "t67b" };
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char copy_cmd[8 + PATH_MAX + 1];
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int i, no_tests;
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no_tests = sizeof(subtests) / sizeof(char *);
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for (i = 0; i < no_tests; i++) {
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snprintf(copy_cmd, 8 + PATH_MAX, "cp ../%s .", subtests[i]);
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system(copy_cmd);
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}
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}
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void
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test_open_cloexec()
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{
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int flags;
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pid_t pid;
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/* Let's create a file with O_CLOEXEC turned on */
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fd = open("file", O_RDWR|O_CREAT|O_CLOEXEC);
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if (fd < 0) e(1);
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/* Now verify through fcntl the flag is indeed set */
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flags = fcntl(fd, F_GETFD);
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if (flags < 0) e(2);
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if (!(flags & FD_CLOEXEC)) e(3);
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/* Fork a child and let child exec a test program that verifies
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* fd is not a valid file */
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pid = fork();
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if (pid == -1) e(4);
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else if (pid == 0) {
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/* We're the child */
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char fd_buf[2];
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/* Verify again O_CLOEXEC is on */
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flags = fcntl(fd, F_GETFD);
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if (flags < 0) e(5);
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if (!(flags & FD_CLOEXEC)) e(6);
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snprintf(fd_buf, sizeof(fd_buf), "%d", fd);
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execl("./t67b", "t67b", fd_buf, NULL);
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/* Should not reach this */
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exit(1);
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} else {
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/* We're the parent */
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int result;
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if (waitpid(pid, &result, 0) == -1) e(7);
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if (WEXITSTATUS(result) != 0) e(8);
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}
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close(fd);
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}
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void
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test_open_fork()
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{
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int flags;
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pid_t pid;
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/* Let's create a file with O_CLOEXEC NOT turned on */
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fd = open("file", O_RDWR|O_CREAT);
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if (fd < 0) e(1);
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/* Now verify through fcntl the flag is indeed not set */
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flags = fcntl(fd, F_GETFD);
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if (flags < 0) e(2);
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if (flags & FD_CLOEXEC) e(3);
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/* Fork a child and let child exec a test program that verifies
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* fd is a valid file */
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pid = fork();
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if (pid == -1) e(4);
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else if (pid == 0) {
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/* We're the child */
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char fd_buf[2];
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/* Verify again O_CLOEXEC is off */
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flags = fcntl(fd, F_GETFD);
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if (flags < 0) e(5);
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if (flags & FD_CLOEXEC) e(6);
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snprintf(fd_buf, sizeof(fd_buf), "%d", fd);
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execl("./t67a", "t67a", fd_buf, NULL);
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/* Should not reach this */
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exit(1);
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} else {
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/* We're the parent */
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int result = 0;
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if (waitpid(pid, &result, 0) == -1) e(7);
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if (WEXITSTATUS(result) != 0) e(8);
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}
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close(fd);
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}
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int
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main(int argc, char *argv[])
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{
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start(67);
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copy_subtests();
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test_open_fork();
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test_open_cloexec();
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quit();
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return(-1); /* Unreachable */
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}
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