Add some extra __attribute__ ((format)) s

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

diff --git a/src/shared/util.h b/src/shared/util.h
index cfb54939cd5d21730b4adcc3cf96a915a9dd58d8..68e87da7cd4213ed35f1e755d8a83dbdd7e37dfa 100644 (file)
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -21,6 +21,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <alloca.h>
 #include <inttypes.h>
 #include <time.h>
 #include <sys/time.h>
@@ -37,6 +38,7 @@
 #include <sys/resource.h>
 #include <stddef.h>
 #include <unistd.h>
+#include <locale.h>
 
 #include "macro.h"
 #include "time-util.h"
@@ -359,8 +361,8 @@ 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);
-int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...);
+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_welcome(void);
 
 int fd_columns(int fd);
@@ -498,7 +500,7 @@ char *format_bytes(char *buf, size_t l, off_t t);
 
 int fd_wait_for_event(int fd, int event, usec_t timeout);
 
-void* memdup(const void *p, size_t l) _malloc_;
+void* memdup(const void *p, size_t l) _alloc_(2);
 
 int is_kernel_thread(pid_t pid);
 
@@ -558,14 +560,14 @@ static inline void umaskp(mode_t *u) {
 #define _cleanup_umask_ _cleanup_(umaskp)
 #define _cleanup_globfree_ _cleanup_(globfree)
 
-_malloc_  static inline void *malloc_multiply(size_t a, size_t b) {
+_malloc_  _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) {
         if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
                 return NULL;
 
         return malloc(a * b);
 }
 
-_malloc_ static inline void *memdup_multiply(const void *p, size_t a, size_t b) {
+_alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) {
         if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
                 return NULL;
 
@@ -642,19 +644,19 @@ static inline void _reset_errno_(int *saved_errno) {
         errno = *saved_errno;
 }
 
-#define PROTECT_ERRNO __attribute__((cleanup(_reset_errno_))) int _saved_errno_ = errno
+#define PROTECT_ERRNO _cleanup_(_reset_errno_) int _saved_errno_ = errno
 
-struct umask_struct {
+struct _umask_struct_ {
         mode_t mask;
         bool quit;
 };
 
-static inline void _reset_umask_(struct umask_struct *s) {
+static inline void _reset_umask_(struct _umask_struct_ *s) {
         umask(s->mask);
 };
 
 #define RUN_WITH_UMASK(mask)                                            \
-        for (__attribute__((cleanup(_reset_umask_))) struct umask_struct _saved_umask_ = { umask(mask), false }; \
+        for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \
              !_saved_umask_.quit ;                                      \
              _saved_umask_.quit = true)
 
@@ -696,3 +698,38 @@ int unlink_noerrno(const char *path);
                 strcpy(stpcpy(_c_, _a_), _b_);          \
                 _c_;                                    \
         })
+
+#define procfs_file_alloca(pid, field)                                  \
+        ({                                                              \
+                pid_t _pid_ = (pid);                                    \
+                char *_r_;                                              \
+                _r_ = alloca(sizeof("/proc/") -1 + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \
+                sprintf(_r_, "/proc/%lu/" field, (unsigned long) _pid_); \
+                _r_;                                                    \
+        })
+
+struct _locale_struct_ {
+        locale_t saved_locale;
+        locale_t new_locale;
+        bool quit;
+};
+
+static inline void _reset_locale_(struct _locale_struct_ *s) {
+        PROTECT_ERRNO;
+        if (s->saved_locale != (locale_t) 0)
+                uselocale(s->saved_locale);
+        if (s->new_locale != (locale_t) 0)
+                freelocale(s->new_locale);
+}
+
+#define RUN_WITH_LOCALE(mask, loc) \
+        for (_cleanup_(_reset_locale_) struct _locale_struct_ _saved_locale_ = { (locale_t) 0, (locale_t) 0, false }; \
+             ({                                                         \
+                     if (!_saved_locale_.quit) {                        \
+                             PROTECT_ERRNO;                             \
+                             _saved_locale_.new_locale = newlocale((mask), (loc), (locale_t) 0); \
+                             if (_saved_locale_.new_locale != (locale_t) 0)     \
+                                     _saved_locale_.saved_locale = uselocale(_saved_locale_.new_locale); \
+                     }                                                  \
+                     !_saved_locale_.quit; }) ;                         \
+             _saved_locale_.quit = true)