diff options
| -rw-r--r-- | tests/fs-tests/integrity/integck.c | 197 |
1 files changed, 192 insertions, 5 deletions
diff --git a/tests/fs-tests/integrity/integck.c b/tests/fs-tests/integrity/integck.c index 2e44419..4009c2a 100644 --- a/tests/fs-tests/integrity/integck.c +++ b/tests/fs-tests/integrity/integck.c @@ -63,6 +63,12 @@ struct file_info /* Each file has one of these */ uint64_t check_run_no; /* Run number used when checking */ }; +struct symlink_info /* Each symlink has one of these */ +{ + char *target_pathname; + struct dir_entry_info *entry; /* dir entry of this symlink */ +}; + struct dir_info /* Each directory has one of these */ { char *name; @@ -81,12 +87,13 @@ struct dir_entry_info /* Each entry in a directory has one of these */ struct dir_entry_info *prev_link; /* List of hard links for same file */ char *name; struct dir_info *parent; /* Parent directory */ - char type; /* f => file, d => dir */ + char type; /* f => file, d => dir, s => symlink */ int checked; /* Temporary flag used when checking */ union entry_ { struct file_info *file; struct dir_info *dir; + struct symlink_info *symlink; void *target; } entry; }; @@ -295,6 +302,11 @@ static void add_dir_entry(struct dir_info *parent, char type, const char *name, dir->entry = entry; dir->name = copy_string(name); dir->parent = parent; + } else if (entry->type == 's') { + struct symlink_info *symlink = target; + + entry->entry.symlink = symlink; + symlink->entry = entry; } } @@ -354,6 +366,7 @@ static struct dir_info *dir_new(struct dir_info *parent, const char *name) static void file_delete(struct file_info *file); static void file_unlink(struct dir_entry_info *entry); +static void symlink_remove(struct symlink_info *symlink); static void dir_remove(struct dir_info *dir) { @@ -368,6 +381,8 @@ static void dir_remove(struct dir_info *dir) dir_remove(entry->entry.dir); else if (entry->type == 'f') file_unlink(entry); + else if (entry->type == 's') + symlink_remove(entry->entry.symlink); else CHECK(0); /* Invalid struct dir_entry_info */ } @@ -1196,6 +1211,55 @@ static void file_check(struct file_info *file, int fd) CHECK(link_count == file->link_count); } +static char *symlink_path(const char *path, const char *target_pathname) +{ + char *p; + size_t len, totlen, tarlen; + + if (target_pathname[0] == '/') + return copy_string(target_pathname); + p = strrchr(path, '/'); + len = p - path; + len += 1; + tarlen = strlen(target_pathname); + totlen = len + tarlen + 1; + p = malloc(totlen); + CHECK(p != NULL); + strncpy(p, path, len); + p[len] = '\0'; + strcat(p, target_pathname); + return p; +} + +void symlink_check(const struct symlink_info *symlink) +{ + char *path, buf[8192], *target; + struct stat st1, st2; + ssize_t len; + int ret1, ret2; + + path = dir_path(symlink->entry->parent, symlink->entry->name); + CHECK(lstat(path, &st1) != -1); + CHECK(S_ISLNK(st1.st_mode)); + CHECK(st1.st_nlink == 1); + len = readlink(path, buf, 8192); + CHECK(len > 0 && len < 8192); + buf[len] = '\0'; + CHECK(strlen(symlink->target_pathname) == len); + CHECK(strncmp(symlink->target_pathname, buf, len) == 0); + /* Check symlink points where it should */ + ret1 = stat(path, &st1); + target = symlink_path(path, symlink->target_pathname); + ret2 = stat(target, &st2); + CHECK(ret1 == ret2); + if (ret1 != -1) { + CHECK(st1.st_dev == st2.st_dev); + CHECK(st1.st_ino == st2.st_ino); + } + free(target); + free(path); +} + static int search_comp(const void *pa, const void *pb) { const struct dirent *a = (const struct dirent *) pa; @@ -1284,6 +1348,8 @@ static void dir_check(struct dir_info *dir) link_count += 1; /* <subdir>/.. */ } else if (entry->type == 'f') file_check(entry->entry.file, -1); + else if (entry->type == 's') + symlink_check(entry->entry.symlink); else CHECK(0); entry = entry->next; @@ -1504,6 +1570,117 @@ static void rename_entry(struct dir_entry_info *entry) free(name); } +static size_t str_count(const char *s, char c) +{ + size_t count = 0; + char cc; + + while ((cc = *s++) != '\0') + if (cc == c) + count += 1; + return count; +} + +static char *relative_path(const char *path1, const char *path2) +{ + const char *p1, *p2; + char *rel; + size_t up, len, len2, i; + + p1 = path1; + p2 = path2; + while (*p1 == *p2 && *p1) { + p1 += 1; + p2 += 1; + } + len2 = strlen(p2); + up = str_count(p1, '/'); + if (up == 0 && len2 != 0) + return copy_string(p2); + if (up == 0 && len2 == 0) { + p2 = strrchr(path2, '/'); + return copy_string(p2); + } + if (up == 1 && len2 == 0) + return copy_string("."); + if (len2 == 0) + up -= 1; + len = up * 3 + len2 + 1; + rel = malloc(len); + CHECK(rel != NULL); + rel[0] = '\0'; + if (up) { + strcat(rel, ".."); + for (i = 1; i < up; i++) + strcat(rel, "/.."); + if (len2) + strcat(rel, "/"); + } + if (len2) + strcat(rel, p2); + return rel; +} + +static char *pick_symlink_target(const char *symlink_path) +{ + struct dir_info *dir; + struct dir_entry_info *entry; + size_t r; + char *path, *rel_path; + + dir = pick_dir(); + + if (tests_random_no(100) < 10) + return dir_path(dir, make_name(dir)); + + r = tests_random_no(dir->number_of_entries); + entry = dir->first; + while (entry && r) { + entry = entry->next; + --r; + } + if (!entry) + entry = dir->first; + if (!entry) + return dir_path(dir, make_name(dir)); + path = dir_path(dir, entry->name); + if (tests_random_no(20) < 10) + return path; + rel_path = relative_path(symlink_path, path); + free(path); + return rel_path; +} + +static void symlink_new(struct dir_info *dir, const char *name) +{ + struct symlink_info *s; + char *path; + size_t sz; + + sz = sizeof(struct symlink_info); + s = malloc(sz); + CHECK(s != NULL); + memset(s, 0, sz); + add_dir_entry(dir, 's', name, s); + + path = dir_path(dir, name); + s->target_pathname = pick_symlink_target(path); + CHECK(symlink(s->target_pathname, path) != -1); + free(path); +} + +static void symlink_remove(struct symlink_info *symlink) +{ + char *path; + + path = dir_path(symlink->entry->parent, symlink->entry->name); + + remove_dir_entry(symlink->entry); + + CHECK(unlink(path) != -1); + free(path); +} + static void operate_on_dir(struct dir_info *dir); static void operate_on_file(struct file_info *file); @@ -1515,6 +1692,13 @@ static void operate_on_entry(struct dir_entry_info *entry) rename_entry(entry); return; } + if (entry->type == 's') { + symlink_check(entry->entry.symlink); + /* If shrinking, 1 time in 50, remove a symlink */ + if (shrink && tests_random_no(50) == 0) + symlink_remove(entry->entry.symlink); + return; + } if (entry->type == 'd') { /* If shrinking, 1 time in 50, remove a directory */ if (shrink && tests_random_no(50) == 0) { @@ -1546,16 +1730,19 @@ static void operate_on_dir(struct dir_info *dir) struct dir_entry_info *entry; struct file_info *file; - r = tests_random_no(12); + r = tests_random_no(14); if (r == 0 && grow) - /* When growing, 1 time in 12 create a file */ + /* When growing, 1 time in 14 create a file */ file_new(dir, make_name(dir)); else if (r == 1 && grow) - /* When growing, 1 time in 12 create a directory */ + /* When growing, 1 time in 14 create a directory */ dir_new(dir, make_name(dir)); else if (r == 2 && grow && (file = pick_file()) != NULL) - /* When growing, 1 time in 12 create a hard link */ + /* When growing, 1 time in 14 create a hard link */ link_new(dir, make_name(dir), file); + else if (r == 3 && grow && tests_random_no(5) == 0) + /* When growing, 1 time in 70 create a symbolic link */ + symlink_new(dir, make_name(dir)); else { /* Otherwise randomly select an entry to operate on */ r = tests_random_no(dir->number_of_entries); |