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* io/Makefile (tests): Add tst-symlinkat, tst-linkat, and
tst-readlinkat. * io/tst-symlinkat.c: New file. * io/tst-linkat.c: New file. * io/tst-readlinkat.c: New file.
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Ulrich Drepper
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Jan 20, 2006
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,171 @@ | ||
#include <dirent.h> | ||
#include <fcntl.h> | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
#include <unistd.h> | ||
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static void prepare (void); | ||
#define PREPARE(argc, argv) prepare () | ||
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static int do_test (void); | ||
#define TEST_FUNCTION do_test () | ||
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#include "../test-skeleton.c" | ||
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static int dir_fd; | ||
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static void | ||
prepare (void) | ||
{ | ||
size_t test_dir_len = strlen (test_dir); | ||
static const char dir_name[] = "/tst-linkat.XXXXXX"; | ||
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size_t dirbuflen = test_dir_len + sizeof (dir_name); | ||
char *dirbuf = malloc (dirbuflen); | ||
if (dirbuf == NULL) | ||
{ | ||
puts ("out of memory"); | ||
exit (1); | ||
} | ||
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snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name); | ||
if (mkdtemp (dirbuf) == NULL) | ||
{ | ||
puts ("cannot create temporary directory"); | ||
exit (1); | ||
} | ||
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add_temp_file (dirbuf); | ||
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dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY); | ||
if (dir_fd == -1) | ||
{ | ||
puts ("cannot open directory"); | ||
exit (1); | ||
} | ||
} | ||
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static int | ||
do_test (void) | ||
{ | ||
/* fdopendir takes over the descriptor, make a copy. */ | ||
int dupfd = dup (dir_fd); | ||
if (dupfd == -1) | ||
{ | ||
puts ("dup failed"); | ||
return 1; | ||
} | ||
if (lseek (dupfd, 0, SEEK_SET) != 0) | ||
{ | ||
puts ("1st lseek failed"); | ||
return 1; | ||
} | ||
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/* The directory should be empty safe the . and .. files. */ | ||
DIR *dir = fdopendir (dupfd); | ||
if (dir == NULL) | ||
{ | ||
puts ("fdopendir failed"); | ||
return 1; | ||
} | ||
struct dirent64 *d; | ||
while ((d = readdir64 (dir)) != NULL) | ||
if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0) | ||
{ | ||
printf ("temp directory contains file \"%s\"\n", d->d_name); | ||
return 1; | ||
} | ||
closedir (dir); | ||
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/* Try to create a file. */ | ||
int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666); | ||
if (fd == -1) | ||
{ | ||
if (errno == ENOSYS) | ||
{ | ||
puts ("*at functions not supported"); | ||
return 0; | ||
} | ||
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puts ("file creation failed"); | ||
return 1; | ||
} | ||
write (fd, "hello", 5); | ||
puts ("file created"); | ||
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struct stat64 st1; | ||
if (fstat64 (fd, &st1) != 0) | ||
{ | ||
puts ("fstat64 failed"); | ||
return 1; | ||
} | ||
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close (fd); | ||
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if (linkat (dir_fd, "some-file", dir_fd, "another-file") != 0) | ||
{ | ||
puts ("symlinkat failed"); | ||
return 1; | ||
} | ||
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struct stat64 st2; | ||
if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0) | ||
{ | ||
puts ("fstatat64 failed"); | ||
return 1; | ||
} | ||
if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino) | ||
{ | ||
puts ("file changed after symlinkat"); | ||
return 1; | ||
} | ||
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if (fstatat64 (dir_fd, "another-file", &st2, AT_SYMLINK_NOFOLLOW) != 0) | ||
{ | ||
puts ("2nd fstatat64 failed"); | ||
return 1; | ||
} | ||
if (S_ISLNK (st2.st_mode)) | ||
{ | ||
puts ("2nd fstatat64 shows file is a symlink"); | ||
return 1; | ||
} | ||
if (st1.st_dev != st2.st_dev | ||
|| st1.st_ino != st2.st_ino | ||
|| st1.st_size != st2.st_size) | ||
{ | ||
puts ("stat results for linked file do not match"); | ||
return 1; | ||
} | ||
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if (fstatat64 (dir_fd, "another-file", &st2, 0) != 0) | ||
{ | ||
puts ("3rd fstatat64 failed"); | ||
return 1; | ||
} | ||
if (st1.st_dev != st2.st_dev | ||
|| st1.st_ino != st2.st_ino | ||
|| st1.st_size != st2.st_size) | ||
{ | ||
puts ("stat results do not match"); | ||
return 1; | ||
} | ||
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if (unlinkat (dir_fd, "another-file", 0) != 0) | ||
{ | ||
puts ("unlinkat failed"); | ||
return 1; | ||
} | ||
if (unlinkat (dir_fd, "some-file", 0) != 0) | ||
{ | ||
puts ("2nd unlinkat failed"); | ||
return 1; | ||
} | ||
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close (dir_fd); | ||
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return 0; | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,136 @@ | ||
#include <dirent.h> | ||
#include <fcntl.h> | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
#include <unistd.h> | ||
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static void prepare (void); | ||
#define PREPARE(argc, argv) prepare () | ||
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static int do_test (void); | ||
#define TEST_FUNCTION do_test () | ||
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#include "../test-skeleton.c" | ||
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static int dir_fd; | ||
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static void | ||
prepare (void) | ||
{ | ||
size_t test_dir_len = strlen (test_dir); | ||
static const char dir_name[] = "/tst-symlinkat.XXXXXX"; | ||
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size_t dirbuflen = test_dir_len + sizeof (dir_name); | ||
char *dirbuf = malloc (dirbuflen); | ||
if (dirbuf == NULL) | ||
{ | ||
puts ("out of memory"); | ||
exit (1); | ||
} | ||
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snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name); | ||
if (mkdtemp (dirbuf) == NULL) | ||
{ | ||
puts ("cannot create temporary directory"); | ||
exit (1); | ||
} | ||
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add_temp_file (dirbuf); | ||
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dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY); | ||
if (dir_fd == -1) | ||
{ | ||
puts ("cannot open directory"); | ||
exit (1); | ||
} | ||
} | ||
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static int | ||
do_test (void) | ||
{ | ||
/* fdopendir takes over the descriptor, make a copy. */ | ||
int dupfd = dup (dir_fd); | ||
if (dupfd == -1) | ||
{ | ||
puts ("dup failed"); | ||
return 1; | ||
} | ||
if (lseek (dupfd, 0, SEEK_SET) != 0) | ||
{ | ||
puts ("1st lseek failed"); | ||
return 1; | ||
} | ||
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/* The directory should be empty safe the . and .. files. */ | ||
DIR *dir = fdopendir (dupfd); | ||
if (dir == NULL) | ||
{ | ||
puts ("fdopendir failed"); | ||
return 1; | ||
} | ||
struct dirent64 *d; | ||
while ((d = readdir64 (dir)) != NULL) | ||
if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0) | ||
{ | ||
printf ("temp directory contains file \"%s\"\n", d->d_name); | ||
return 1; | ||
} | ||
closedir (dir); | ||
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static const char symlinkcontent[] = "some-file"; | ||
if (symlinkat (symlinkcontent, dir_fd, "another-file") != 0) | ||
{ | ||
puts ("symlinkat failed"); | ||
return 1; | ||
} | ||
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struct stat64 st2; | ||
if (fstatat64 (dir_fd, "another-file", &st2, AT_SYMLINK_NOFOLLOW) != 0) | ||
{ | ||
puts ("fstatat64 failed"); | ||
return 1; | ||
} | ||
if (!S_ISLNK (st2.st_mode)) | ||
{ | ||
puts ("2nd fstatat64 does not show file is a symlink"); | ||
return 1; | ||
} | ||
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if (fstatat64 (dir_fd, symlinkcontent, &st2, AT_SYMLINK_NOFOLLOW) == 0) | ||
{ | ||
puts ("2nd fstatat64 succeeded"); | ||
return 1; | ||
} | ||
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char buf[100]; | ||
int n = readlinkat (dir_fd, "another-file", buf, sizeof (buf)); | ||
if (n == -1) | ||
{ | ||
puts ("readlinkat failed"); | ||
return 1; | ||
} | ||
if (n != sizeof (symlinkcontent) - 1) | ||
{ | ||
printf ("readlinkat returned %d, expected %zu\n", | ||
n, sizeof (symlinkcontent) - 1); | ||
return 1; | ||
} | ||
if (strncmp (buf, symlinkcontent, n) != 0) | ||
{ | ||
puts ("readlinkat retrieved wrong link content"); | ||
return 1; | ||
} | ||
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if (unlinkat (dir_fd, "another-file", 0) != 0) | ||
{ | ||
puts ("unlinkat failed"); | ||
return 1; | ||
} | ||
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close (dir_fd); | ||
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return 0; | ||
} |
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