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Add tests for dup3().

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This commit is contained in:
Jilles Tjoelker 2013-08-16 13:16:55 +00:00
parent 5219e2caba
commit fcaac274c0
1 changed files with 86 additions and 1 deletions
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87
tools/regression/file/dup/dup.c
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@ -38,6 +38,16 @@
* fd.
* Test #23: check if fcntl(F_DUP2FD_CLOEXEC) to a fd > current maximum number
* of open files limit work.
* Test #24: check if dup3(O_CLOEXEC) works.
* Test #25: check if dup3(O_CLOEXEC) returned a fd we asked for.
* Test #26: check if dup3(O_CLOEXEC) set close-on-exec flag for duped fd.
* Test #27: check if dup3(0) works.
* Test #28: check if dup3(0) returned a fd we asked for.
* Test #29: check if dup3(0) cleared close-on-exec flag for duped fd.
* Test #30: check if dup3(O_CLOEXEC) fails if oldfd == newfd.
* Test #31: check if dup3(0) fails if oldfd == newfd.
* Test #32: check if dup3(O_CLOEXEC) to a fd > current maximum number of
* open files limit work.
*/
#include <sys/types.h>
@ -74,7 +84,7 @@ main(int __unused argc, char __unused *argv[])
orgfd = getafile();
printf("1..23\n");
printf("1..32\n");
/* If dup(2) ever work? */
if ((fd1 = dup(orgfd)) < 0)
@ -297,5 +307,80 @@ main(int __unused argc, char __unused *argv[])
printf("ok %d - fcntl(F_DUP2FD_CLOEXEC) didn't bypass NOFILE limit\n",
test);
/* Does dup3(O_CLOEXEC) ever work? */
if ((fd2 = dup3(fd1, fd1 + 1, O_CLOEXEC)) < 0)
err(1, "dup3(O_CLOEXEC)");
printf("ok %d - dup3(O_CLOEXEC) works\n", ++test);
/* Do we get the right fd? */
++test;
if (fd2 != fd1 + 1)
printf(
"no ok %d - dup3(O_CLOEXEC) didn't give us the right fd\n",
test);
else
printf("ok %d - dup3(O_CLOEXEC) returned a correct fd\n",
test);
/* Was close-on-exec set? */
++test;
if (fcntl(fd2, F_GETFD) != FD_CLOEXEC)
printf(
"not ok %d - dup3(O_CLOEXEC) didn't set close-on-exec\n",
test);
else
printf("ok %d - dup3(O_CLOEXEC) set close-on-exec\n",
test);
/* Does dup3(0) ever work? */
if ((fd2 = dup3(fd1, fd1 + 1, 0)) < 0)
err(1, "dup3(0)");
printf("ok %d - dup3(0) works\n", ++test);
/* Do we get the right fd? */
++test;
if (fd2 != fd1 + 1)
printf(
"no ok %d - dup3(0) didn't give us the right fd\n",
test);
else
printf("ok %d - dup3(0) returned a correct fd\n",
test);
/* Was close-on-exec cleared? */
++test;
if (fcntl(fd2, F_GETFD) != 0)
printf(
"not ok %d - dup3(0) didn't clear close-on-exec\n",
test);
else
printf("ok %d - dup3(0) cleared close-on-exec\n",
test);
/* dup3() does not allow duplicating to the same fd */
++test;
if (dup3(fd1, fd1, O_CLOEXEC) != -1)
printf(
"not ok %d - dup3(fd1, fd1, O_CLOEXEC) succeeded\n", test);
else
printf("ok %d - dup3(fd1, fd1, O_CLOEXEC) failed\n", test);
++test;
if (dup3(fd1, fd1, 0) != -1)
printf(
"not ok %d - dup3(fd1, fd1, 0) succeeded\n", test);
else
printf("ok %d - dup3(fd1, fd1, 0) failed\n", test);
++test;
if (getrlimit(RLIMIT_NOFILE, &rlp) < 0)
err(1, "getrlimit");
if ((fd2 = dup3(fd1, rlp.rlim_cur + 1, O_CLOEXEC)) >= 0)
printf("not ok %d - dup3(O_CLOEXEC) bypassed NOFILE limit\n",
test);
else
printf("ok %d - dup3(O_CLOEXEC) didn't bypass NOFILE limit\n",
test);
return (0);
}