X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Futil.h;h=d90b8084769ce77efa7673600e10386fd44a10e4;hb=275b39fe4bf19f244114dbefa58e0d77047eff4a;hp=3be692ec33423cb6b455a28c1385efa2a1db95f8;hpb=0b5a519c89b5fb48ec7a3cfbd9c02283ae0f23ac;p=elogind.git

diff --git a/src/shared/util.h b/src/shared/util.h
index 3be692ec3..d90b80847 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -39,6 +39,7 @@
 #include <stddef.h>
 #include <unistd.h>
 #include <locale.h>
+#include <mntent.h>
 
 #include "macro.h"
 #include "time-util.h"
@@ -106,9 +107,19 @@ static inline bool isempty(const char *p) {
         return !p || !p[0];
 }
 
+static inline const char *startswith(const char *s, const char *prefix) {
+        if (strncmp(s, prefix, strlen(prefix)) == 0)
+                return s + strlen(prefix);
+        return NULL;
+}
+
+static inline const char *startswith_no_case(const char *s, const char *prefix) {
+        if (strncasecmp(s, prefix, strlen(prefix)) == 0)
+                return s + strlen(prefix);
+        return NULL;
+}
+
 char *endswith(const char *s, const char *postfix) _pure_;
-char *startswith(const char *s, const char *prefix) _pure_;
-char *startswith_no_case(const char *s, const char *prefix) _pure_;
 
 bool first_word(const char *s, const char *word) _pure_;
 
@@ -243,6 +254,7 @@ int make_null_stdio(void);
 int make_console_stdio(void);
 
 unsigned long long random_ull(void);
+unsigned random_u(void);
 
 /* For basic lookup tables with strictly enumerated entries */
 #define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope)                   \
@@ -308,7 +320,7 @@ bool fstype_is_network(const char *fstype);
 int chvt(int vt);
 
 int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl);
-int ask(char *ret, const char *replies, const char *text, ...) _printf_attr_(3, 4);
+int ask(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);
 
 int reset_terminal_fd(int fd, bool switch_to_text);
 int reset_terminal(const char *name);
@@ -362,8 +374,8 @@ int pipe_eof(int fd);
 
 cpu_set_t* cpu_set_malloc(unsigned *ncpus);
 
-int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_attr_(4,0);
-int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_attr_(4,5);
+int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0);
+int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5);
 int status_welcome(void);
 
 int fd_columns(int fd);
@@ -393,6 +405,7 @@ static inline const char *ansi_highlight_off(void) {
 int running_in_chroot(void);
 
 char *ellipsize(const char *s, size_t length, unsigned percent);
+                                   /* bytes                 columns */
 char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);
 
 int touch(const char *path);
@@ -437,7 +450,7 @@ int terminal_vhangup(const char *name);
 
 int vt_disallocate(const char *name);
 
-int copy_file(const char *from, const char *to);
+int copy_file(const char *from, const char *to, int flags);
 
 int symlink_atomic(const char *from, const char *to);
 
@@ -543,37 +556,40 @@ static inline void freep(void *p) {
         free(*(void**) p);
 }
 
-static inline void fclosep(FILE **f) {
-        if (*f)
-                fclose(*f);
-}
-
-static inline void pclosep(FILE **f) {
-        if (*f)
-                pclose(*f);
-}
+#define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func)                 \
+        static inline void func##p(type *p) {                   \
+                if (*p)                                         \
+                        func(*p);                               \
+        }                                                       \
+        struct __useless_struct_to_allow_trailing_semicolon__
 
 static inline void closep(int *fd) {
         if (*fd >= 0)
                 close_nointr_nofail(*fd);
 }
 
-static inline void closedirp(DIR **d) {
-        if (*d)
-                closedir(*d);
-}
-
 static inline void umaskp(mode_t *u) {
         umask(*u);
 }
 
+static inline void close_pipep(int (*p)[2]) {
+        close_pipe(*p);
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose);
+DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose);
+DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir);
+DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent);
+
 #define _cleanup_free_ _cleanup_(freep)
-#define _cleanup_fclose_ _cleanup_(fclosep)
-#define _cleanup_pclose_ _cleanup_(pclosep)
 #define _cleanup_close_ _cleanup_(closep)
-#define _cleanup_closedir_ _cleanup_(closedirp)
 #define _cleanup_umask_ _cleanup_(umaskp)
 #define _cleanup_globfree_ _cleanup_(globfree)
+#define _cleanup_fclose_ _cleanup_(fclosep)
+#define _cleanup_pclose_ _cleanup_(pclosep)
+#define _cleanup_closedir_ _cleanup_(closedirp)
+#define _cleanup_endmntent_ _cleanup_(endmntentp)
+#define _cleanup_close_pipe_ _cleanup_(close_pipep)
 
 _malloc_  _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) {
         if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
@@ -753,3 +769,17 @@ bool id128_is_valid(const char *s) _pure_;
 void parse_user_at_host(char *arg, char **user, char **host);
 
 int split_pair(const char *s, const char *sep, char **l, char **r);
+
+bool restore_state(void);
+
+/**
+ * Normal qsort requires base to be nonnull. Here were require
+ * that only if nmemb > 0.
+ */
+static inline void qsort_safe(void *base, size_t nmemb, size_t size,
+                              int (*compar)(const void *, const void *)) {
+        if (nmemb) {
+                assert(base);
+                qsort(base, nmemb, size, compar);
+        }
+}