extract_first_word: Refactor allocation in empty argument case

[elogind.git] / src / basic / util.h

diff --git a/src/basic/util.h b/src/basic/util.h
index 0d0b881b95fee0357eb652e5d4e279c651382617..d7744a7d47d7f26256df4187320d77ea75de42a9 100644 (file)
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -71,6 +71,7 @@ size_t page_size(void) _pure_;
 #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)
 
 bool streq_ptr(const char *a, const char *b) _pure_;
+int strcmp_ptr(const char *a, const char *b) _pure_;
 
 #define new(t, n) ((t*) malloc_multiply(sizeof(t), (n)))
 
@@ -82,7 +83,12 @@ bool streq_ptr(const char *a, const char *b) _pure_;
 
 #define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n)))
 
-#define malloc0(n) (calloc((n), 1))
+#define malloc0(n) (calloc(1, (n)))
+
+static inline void *mfree(void *memory) {
+        free(memory);
+        return NULL;
+}
 
 static inline const char* yes_no(bool b) {
         return b ? "yes" : "no";
@@ -240,6 +246,10 @@ char octchar(int x) _const_;
 int unoctchar(char c) _const_;
 char decchar(int x) _const_;
 int undecchar(char c) _const_;
+char base32hexchar(int x) _const_;
+int unbase32hexchar(char c) _const_;
+char base64char(int x) _const_;
+int unbase64char(char c) _const_;
 
 char *cescape(const char *s);
 size_t cescape_char(char c, char *buf);
@@ -614,7 +624,13 @@ static inline void *mempset(void *s, int c, size_t n) {
 }
 
 char *hexmem(const void *p, size_t l);
-void *unhexmem(const char *p, size_t l);
+int unhexmem(const char *p, size_t l, void **mem, size_t *len);
+
+char *base32hexmem(const void *p, size_t l, bool padding);
+int unbase32hexmem(const char *p, size_t l, bool padding, void **mem, size_t *len);
+
+char *base64mem(const void *p, size_t l);
+int unbase64mem(const char *p, size_t l, void **mem, size_t *len);
 
 char *strextend(char **x, ...) _sentinel_;
 char *strrep(const char *s, unsigned n);
@@ -785,10 +801,10 @@ int proc_cmdline(char **ret);
 int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value));
 int get_proc_cmdline_key(const char *parameter, char **value);
 
-// UNNEEDED int container_get_leader(const char *machine, pid_t *pid);
+int container_get_leader(const char *machine, pid_t *pid);
 
-int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *root_fd);
-int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int root_fd);
+int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *userns_fd, int *root_fd);
+int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int userns_fd, int root_fd);
 
 int getpeercred(int fd, struct ucred *ucred);
 int getpeersec(int fd, char **ret);
@@ -838,15 +854,22 @@ int tempfn_random(const char *p, const char *extra, char **ret);
 int is_dir(const char *path, bool follow);
 // UNNEEDED int is_device_node(const char *path);
 
-typedef enum UnquoteFlags {
-        UNQUOTE_RELAX           = 1,
-        UNQUOTE_CUNESCAPE       = 2,
-        UNQUOTE_CUNESCAPE_RELAX = 4,
-} UnquoteFlags;
+typedef enum ExtractFlags {
+        EXTRACT_RELAX           = 1,
+        EXTRACT_CUNESCAPE       = 2,
+        EXTRACT_CUNESCAPE_RELAX = 4,
+        EXTRACT_QUOTES          = 8,
+        EXTRACT_DONT_COALESCE_SEPARATORS = 16,
+} ExtractFlags;
+
+int extract_first_word(const char **p, char **ret, const char *separators, ExtractFlags flags);
+// UNNEEDED int extract_first_word_and_warn(const char **p, char **ret, const char *separators, ExtractFlags flags, const char *unit, const char *filename, unsigned line, const char *rvalue);
+// UNNEEDED int extract_many_words(const char **p, const char *separators, ExtractFlags flags, ...) _sentinel_;
 
-int unquote_first_word(const char **p, char **ret, UnquoteFlags flags);
-// UNNEEDED int unquote_first_word_and_warn(const char **p, char **ret, UnquoteFlags flags, const char *unit, const char *filename, unsigned line, const char *rvalue);
-// UNNEEDED int unquote_many_words(const char **p, UnquoteFlags flags, ...) _sentinel_;
+static inline void free_and_replace(char **s, char *v) {
+        free(*s);
+        *s = v;
+}
 
 int free_and_strdup(char **p, const char *s);
 
@@ -896,6 +919,7 @@ void sigkill_wait(pid_t *pid);
 
 // UNNEEDED int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath);
 
+char *shell_escape(const char *s, const char *bad);
 char *shell_maybe_quote(const char *s);
 
 int parse_mode(const char *s, mode_t *ret);
@@ -903,3 +927,6 @@ int parse_mode(const char *s, mode_t *ret);
 // UNNEEDED int mount_move_root(const char *path);
 
 int reset_uid_gid(void);
+
+int getxattr_malloc(const char *path, const char *name, char **value, bool allow_symlink);
+int fgetxattr_malloc(int fd, const char *name, char **value);