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Signed-off-by: Michał Mirosław <[email protected]>
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@@ -258,6 +258,7 @@ TST_NOFILE := \ | |
memfd02-hugetlb \ | ||
memfd03 \ | ||
memfd04 \ | ||
memfd05 \ | ||
shmemfd \ | ||
shmemfd-priv \ | ||
time \ | ||
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#include <linux/memfd.h> | ||
#include <sys/syscall.h> | ||
#include <sys/types.h> | ||
#include <sys/wait.h> | ||
#include <stdbool.h> | ||
#include <stdint.h> | ||
#include <unistd.h> | ||
#include <fcntl.h> | ||
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#include "zdtmtst.h" | ||
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const char *test_doc = "exec(memfd)"; | ||
const char *test_author = "Michał Mirosław <[email protected]>"; | ||
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static int _memfd_create(const char *name, unsigned int flags) | ||
{ | ||
return syscall(SYS_memfd_create, name, flags); | ||
} | ||
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static int _execveat(int dirfd, const char *pathname, | ||
const char *const argv[], | ||
const char *const envp[], | ||
int flags) | ||
{ | ||
return syscall(SYS_execveat, dirfd, pathname, argv, envp, flags); | ||
} | ||
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static const char *const script_argv[] = { "true", NULL }; | ||
static const char *const script_env[] = { NULL }; | ||
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static bool test_exec_fd(int fd) | ||
{ | ||
int err, pid, status; | ||
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err = fcntl(fd, F_GETFD); | ||
if (err < 0) { | ||
fail("fcntl(F_GETFD)"); | ||
return false; | ||
} | ||
if (err) { | ||
errno = 0; | ||
fail("F_GETFD for the memfd returned %d but expected 0", err); | ||
return false; | ||
} | ||
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pid = fork(); | ||
if (!pid) { | ||
_execveat(fd, "", script_argv, script_env, AT_EMPTY_PATH); | ||
err = errno; | ||
pr_perror("execveat()"); | ||
_exit(err); | ||
} | ||
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if (pid < 0) { | ||
fail("fork()"); | ||
return false; | ||
} | ||
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while (waitpid(pid, &status, 0) != pid) { | ||
if (errno == EINTR) | ||
continue; | ||
fail("waitpid(child=%d)", pid); | ||
return false; | ||
} | ||
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if (status != 0) { | ||
pr_err("child exited with status=%d\n", status); | ||
return false; | ||
} | ||
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return true; | ||
} | ||
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static const char script[] = "#!/bin/true"; | ||
static const size_t script_len = sizeof(script) - 1; | ||
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int main(int argc, char *argv[]) | ||
{ | ||
int fd; | ||
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test_init(argc, argv); | ||
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fd = _memfd_create("somename", 0); | ||
if (fd < 0) { | ||
fail("memfd_create()"); | ||
return 1; | ||
} | ||
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if (write(fd, script, script_len) != script_len) { | ||
fail("write(memfd)"); | ||
return 1; | ||
} | ||
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if (!test_exec_fd(fd)) | ||
return 1; | ||
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test_msg("execveat(memfd) succeeded before C/R.\n"); | ||
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test_daemon(); | ||
test_waitsig(); | ||
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if (!test_exec_fd(fd)) | ||
return 1; | ||
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pass(); | ||
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return 0; | ||
} |
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{'deps': ['/bin/true']} |