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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197// SPDX-License-Identifier: GPL-2.0+#include <errno.h>#include <fcntl.h>#include <stdio.h>#include <string.h>#include <unistd.h>#include <sys/socket.h>#include <sys/stat.h>#include <sys/sysmacros.h>#include <sys/types.h>
#include "kselftest_harness.h"
/* Remove a file, ignoring the result if it didn't exist. */void rm(struct __test_metadata *_metadata, const char *pathname, int is_dir){ int rc;
if (is_dir) rc = rmdir(pathname); else rc = unlink(pathname);
if (rc < 0) { ASSERT_EQ(errno, ENOENT) { TH_LOG("Not ENOENT: %s", pathname); } } else { ASSERT_EQ(rc, 0) { TH_LOG("Failed to remove: %s", pathname); } }}
FIXTURE(file) { char *pathname; int is_dir;};
FIXTURE_VARIANT(file){ const char *name; int expected; int is_dir; void (*setup)(struct __test_metadata *_metadata, FIXTURE_DATA(file) *self, const FIXTURE_VARIANT(file) *variant); int major, minor, mode; /* for mknod() */};
void setup_link(struct __test_metadata *_metadata, FIXTURE_DATA(file) *self, const FIXTURE_VARIANT(file) *variant){ const char * const paths[] = { "/bin/true", "/usr/bin/true", }; int i;
for (i = 0; i < ARRAY_SIZE(paths); i++) { if (access(paths[i], X_OK) == 0) { ASSERT_EQ(symlink(paths[i], self->pathname), 0); return; } } ASSERT_EQ(1, 0) { TH_LOG("Could not find viable 'true' binary"); }}
FIXTURE_VARIANT_ADD(file, S_IFLNK){ .name = "S_IFLNK", .expected = ELOOP, .setup = setup_link,};
void setup_dir(struct __test_metadata *_metadata, FIXTURE_DATA(file) *self, const FIXTURE_VARIANT(file) *variant){ ASSERT_EQ(mkdir(self->pathname, 0755), 0);}
FIXTURE_VARIANT_ADD(file, S_IFDIR){ .name = "S_IFDIR", .is_dir = 1, .expected = EACCES, .setup = setup_dir,};
void setup_node(struct __test_metadata *_metadata, FIXTURE_DATA(file) *self, const FIXTURE_VARIANT(file) *variant){ dev_t dev; int rc;
dev = makedev(variant->major, variant->minor); rc = mknod(self->pathname, 0755 | variant->mode, dev); ASSERT_EQ(rc, 0) { if (errno == EPERM) SKIP(return, "Please run as root; cannot mknod(%s)", variant->name); }}
FIXTURE_VARIANT_ADD(file, S_IFBLK){ .name = "S_IFBLK", .expected = EACCES, .setup = setup_node, /* /dev/loop0 */ .major = 7, .minor = 0, .mode = S_IFBLK,};
FIXTURE_VARIANT_ADD(file, S_IFCHR){ .name = "S_IFCHR", .expected = EACCES, .setup = setup_node, /* /dev/zero */ .major = 1, .minor = 5, .mode = S_IFCHR,};
void setup_fifo(struct __test_metadata *_metadata, FIXTURE_DATA(file) *self, const FIXTURE_VARIANT(file) *variant){ ASSERT_EQ(mkfifo(self->pathname, 0755), 0);}
FIXTURE_VARIANT_ADD(file, S_IFIFO){ .name = "S_IFIFO", .expected = EACCES, .setup = setup_fifo,};
FIXTURE_SETUP(file){ ASSERT_GT(asprintf(&self->pathname, "%s.test", variant->name), 6); self->is_dir = variant->is_dir;
rm(_metadata, self->pathname, variant->is_dir); variant->setup(_metadata, self, variant);}
FIXTURE_TEARDOWN(file){ rm(_metadata, self->pathname, self->is_dir);}
TEST_F(file, exec_errno){ char * const argv[2] = { (char * const)self->pathname, NULL };
EXPECT_LT(execv(argv[0], argv), 0); EXPECT_EQ(errno, variant->expected);}
/* S_IFSOCK */FIXTURE(sock){ int fd;};
FIXTURE_SETUP(sock){ self->fd = socket(AF_INET, SOCK_STREAM, 0); ASSERT_GE(self->fd, 0);}
FIXTURE_TEARDOWN(sock){ if (self->fd >= 0) ASSERT_EQ(close(self->fd), 0);}
TEST_F(sock, exec_errno){ char * const argv[2] = { " magic socket ", NULL }; char * const envp[1] = { NULL };
EXPECT_LT(fexecve(self->fd, argv, envp), 0); EXPECT_EQ(errno, EACCES);}
TEST_HARNESS_MAIN