-/* liblxcapi
- *
- * Copyright © 2018 Christian Brauner <christian.brauner@ubuntu.com>.
- * Copyright © 2018 Canonical Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2, as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
+/* SPDX-License-Identifier: LGPL-2.1+ */
#ifndef __LXC_STRING_UTILS_H
#define __LXC_STRING_UTILS_H
+#include <stdarg.h>
+
#include "config.h"
#include "initutils.h"
#include "macro.h"
+#ifndef HAVE_STRLCAT
+#include "include/strlcat.h"
+#endif
+
/* convert variadic argument lists to arrays (for execl type argument lists) */
-extern char **lxc_va_arg_list_to_argv(va_list ap, size_t skip, int do_strdup);
-extern const char **lxc_va_arg_list_to_argv_const(va_list ap, size_t skip);
+__hidden extern char **lxc_va_arg_list_to_argv(va_list ap, size_t skip, int do_strdup);
+__hidden extern const char **lxc_va_arg_list_to_argv_const(va_list ap, size_t skip);
/*
* Some simple string functions; if they return pointers, they are allocated
* buffers.
*/
-extern char *lxc_string_replace(const char *needle, const char *replacement,
- const char *haystack);
-extern bool lxc_string_in_array(const char *needle, const char **haystack);
-extern char *lxc_string_join(const char *sep, const char **parts,
- bool use_as_prefix);
+__hidden extern char *lxc_string_replace(const char *needle, const char *replacement,
+ const char *haystack);
+__hidden extern bool lxc_string_in_array(const char *needle, const char **haystack);
+__hidden extern char *lxc_string_join(const char *sep, const char **parts, bool use_as_prefix);
/*
* Normalize and split path: Leading and trailing / are removed, multiple
* / are compactified, .. and . are resolved (.. on the top level is considered
* ./bar/baz/.. -> { bar, NULL }
* foo//bar -> { foo, bar, NULL }
*/
-extern char **lxc_normalize_path(const char *path);
+__hidden extern char **lxc_normalize_path(const char *path);
/* remove multiple slashes from the path, e.g. ///foo//bar -> /foo/bar */
-extern char *lxc_deslashify(const char *path);
-extern char *lxc_append_paths(const char *first, const char *second);
+__hidden extern char *lxc_deslashify(const char *path);
+__hidden extern char *lxc_append_paths(const char *first, const char *second);
/*
* Note: the following two functions use strtok(), so they will never
* consider an empty element, even if two delimiters are next to
* each other.
*/
-extern bool lxc_string_in_list(const char *needle, const char *haystack,
- char sep);
-extern char **lxc_string_split(const char *string, char sep);
-extern char **lxc_string_split_and_trim(const char *string, char sep);
-extern char **lxc_string_split_quoted(char *string);
+__hidden extern bool lxc_string_in_list(const char *needle, const char *haystack, char sep);
+__hidden extern char **lxc_string_split(const char *string, char sep);
+__hidden extern char **lxc_string_split_and_trim(const char *string, char sep);
+__hidden extern char **lxc_string_split_quoted(char *string);
/* Append string to NULL-terminated string array. */
-extern int lxc_append_string(char ***list, char *entry);
+__hidden extern int lxc_append_string(char ***list, char *entry);
/* Some simple array manipulation utilities */
typedef void (*lxc_free_fn)(void *);
typedef void *(*lxc_dup_fn)(void *);
-extern int lxc_grow_array(void ***array, size_t *capacity, size_t new_size,
- size_t capacity_increment);
-extern void lxc_free_array(void **array, lxc_free_fn element_free_fn);
-extern size_t lxc_array_len(void **array);
+__hidden extern int lxc_grow_array(void ***array, size_t *capacity, size_t new_size,
+ size_t capacity_increment);
+__hidden extern void lxc_free_array(void **array, lxc_free_fn element_free_fn);
+__hidden extern size_t lxc_array_len(void **array);
-extern void **lxc_append_null_to_array(void **array, size_t count);
-extern void remove_trailing_newlines(char *l);
+__hidden extern void **lxc_append_null_to_array(void **array, size_t count);
+__hidden extern void remove_trailing_newlines(char *l);
/* Helper functions to parse numbers. */
-extern int lxc_safe_uint(const char *numstr, unsigned int *converted);
-extern int lxc_safe_int(const char *numstr, int *converted);
-extern int lxc_safe_long(const char *numstr, long int *converted);
-extern int lxc_safe_long_long(const char *numstr, long long int *converted);
-extern int lxc_safe_ulong(const char *numstr, unsigned long *converted);
-extern int lxc_safe_uint64(const char *numstr, uint64_t *converted, int base);
+__hidden extern int lxc_safe_uint(const char *numstr, unsigned int *converted);
+__hidden extern int lxc_safe_int(const char *numstr, int *converted);
+__hidden extern int lxc_safe_long(const char *numstr, long int *converted);
+__hidden extern int lxc_safe_long_long(const char *numstr, long long int *converted);
+__hidden extern int lxc_safe_ulong(const char *numstr, unsigned long *converted);
+__hidden extern int lxc_safe_uint64(const char *numstr, uint64_t *converted, int base);
+__hidden extern int lxc_safe_int64_residual(const char *numstr, int64_t *converted, int base,
+ char *residual, size_t residual_len);
/* Handles B, kb, MB, GB. Detects overflows and reports -ERANGE. */
-extern int parse_byte_size_string(const char *s, int64_t *converted);
+__hidden extern int parse_byte_size_string(const char *s, int64_t *converted);
/*
* Concatenate all passed-in strings into one path. Do not fail. If any piece
* is not prefixed with '/', add a '/'.
*/
-__attribute__((sentinel)) extern char *must_concat(const char *first, ...);
-__attribute__((sentinel)) extern char *must_make_path(const char *first, ...);
-__attribute__((sentinel)) extern char *must_append_path(char *first, ...);
+__hidden __attribute__((sentinel)) extern char *must_concat(size_t *len, const char *first, ...);
+__hidden __attribute__((sentinel)) extern char *must_make_path(const char *first, ...);
+__hidden __attribute__((sentinel)) extern char *must_append_path(char *first, ...);
/* Return copy of string @entry. Do not fail. */
-extern char *must_copy_string(const char *entry);
+__hidden extern char *must_copy_string(const char *entry);
+
+/* Re-allocate a pointer, do not fail */
+__hidden extern void *must_realloc(void *orig, size_t sz);
+
+__hidden extern int lxc_char_left_gc(const char *buffer, size_t len);
+
+__hidden extern int lxc_char_right_gc(const char *buffer, size_t len);
+
+__hidden extern char *lxc_trim_whitespace_in_place(char *buffer);
+
+__hidden extern int lxc_is_line_empty(const char *line);
+__hidden extern void remove_trailing_slashes(char *p);
+
+static inline bool is_empty_string(const char *s)
+{
+ return !s || strcmp(s, "") == 0;
+}
-/* Re-alllocate a pointer, do not fail */
-extern void *must_realloc(void *orig, size_t sz);
+static inline ssize_t safe_strlcat(char *src, const char *append, size_t len)
+{
+ size_t new_len;
-extern int lxc_char_left_gc(const char *buffer, size_t len);
+ new_len = strlcat(src, append, len);
+ if (new_len >= len)
+ return ret_errno(EINVAL);
-extern int lxc_char_right_gc(const char *buffer, size_t len);
+ return (ssize_t)new_len;
+}
-extern char *lxc_trim_whitespace_in_place(char *buffer);
+static inline bool strnequal(const char *str, const char *eq, size_t len)
+{
+ return strncmp(str, eq, len) == 0;
+}
-extern int lxc_is_line_empty(const char *line);
-extern void remove_trailing_slashes(char *p);
+static inline bool strequal(const char *str, const char *eq)
+{
+ return strcmp(str, eq) == 0;
+}
#endif /* __LXC_STRING_UTILS_H */
projects / mirror_lxc.git / blobdiff