/*
* Sherlock Library -- Miscellaneous Functions
*
- * (c) 1997--2001 Martin Mares <mj@ucw.cz>
+ * (c) 1997--2004 Martin Mares <mj@ucw.cz>
*
* This software may be freely distributed and used according to the terms
* of the GNU Lesser General Public License.
#define _SHERLOCK_LIB_H
#include "lib/config.h"
+#include <stdarg.h>
/* Tell libc we're going to use all extensions available */
#define CLAMP(x,min,max) ({ int _t=x; (_t < min) ? min : (_t > max) ? max : _t; })
#define ABS(x) ((x) < 0 ? -(x) : (x))
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(*(a)))
+#define STRINGIFY(x) #x
+#define GLUE(x,y) x##y
+#define GLUE_(x,y) x##_##y
+#define COMPARE(x,y) do { if ((x)<(y)) return -1; if ((x)>(y)) return 1; } while(0)
+#define REV_COMPARE(x,y) COMPARE(y,x)
/* Logging */
#define L_ERROR_R 'e'
#define L_FATAL '!' /* die() */
-void log(unsigned int cat, const char *msg, ...) __attribute__((format(printf,2,3)));
+extern char *log_title; /* NULL - print no title, default is log_progname */
+extern char *log_filename; /* Expanded name of the current log file */
+extern int log_switch_nest; /* log_switch() nesting counter, increment to disable automatic switches */
+extern int log_pid; /* 0 if shouldn't be logged */
+extern void (*log_die_hook)(void);
+struct tm;
+extern void (*log_switch_hook)(struct tm *tm);
+
+void log_msg(unsigned int cat, const char *msg, ...) __attribute__((format(printf,2,3)));
+#define log log_msg
+void vlog_msg(unsigned int cat, const char *msg, va_list args);
void die(byte *, ...) NONRET;
-void log_init(byte *);
-void log_file(byte *);
+void log_init(byte *argv0);
+void log_file(byte *name);
void log_fork(void);
+void log_switch(void);
-#ifdef DEBUG
void assert_failed(char *assertion, char *file, int line) NONRET;
-#define ASSERT(x) do { if (!(x)) assert_failed(#x, __FILE__, __LINE__); } while(0)
+void assert_failed_noinfo(void) NONRET;
+
+#ifdef DEBUG_ASSERTS
+#define ASSERT(x) do { if (unlikely(!(x))) assert_failed(#x, __FILE__, __LINE__); } while(0)
#else
-void assert_failed(void) NONRET;
-#define ASSERT(x) do { if (__builtin_constant_p(x) && !(x)) assert_failed(); } while(0)
+#define ASSERT(x) do { if (__builtin_constant_p(x) && !(x)) assert_failed_noinfo(); } while(0)
#endif
+#define COMPILE_ASSERT(name,x) typedef char _COMPILE_ASSERT_##name[!!(x)-1]
+
#ifdef LOCAL_DEBUG
#define DBG(x,y...) log(L_DEBUG, x,##y)
#else
#define DBG(x,y...) do { } while(0)
#endif
+static inline void log_switch_disable(void) { log_switch_nest++; }
+static inline void log_switch_enable(void) { ASSERT(log_switch_nest); log_switch_nest--; }
+
/* Memory allocation */
-#ifdef DMALLOC
+#define xmalloc sh_xmalloc
+#define xrealloc sh_xrealloc
+#define xfree sh_xfree
+
+#ifdef DEBUG_DMALLOC
/*
* The standard dmalloc macros tend to produce lots of namespace
* conflicts and we use only xmalloc and xfree, so we can define
*/
#define DMALLOC_DISABLE
#include <dmalloc.h>
-#define xmalloc(size) _xmalloc_leap(__FILE__, __LINE__, size)
-#define xrealloc(ptr,size) _xrealloc_leap(__FILE__, __LINE__, ptr, size)
-#define xfree(ptr) _xfree_leap(__FILE__, __LINE__, ptr)
+#define sh_xmalloc(size) _xmalloc_leap(__FILE__, __LINE__, size)
+#define sh_xrealloc(ptr,size) _xrealloc_leap(__FILE__, __LINE__, ptr, size)
+#define sh_xfree(ptr) _xfree_leap(__FILE__, __LINE__, ptr)
#else
/*
* Unfortunately, several libraries we might want to link to define
* their own xmalloc and we don't want to interfere with them, hence
* the renaming.
*/
-#define xmalloc sh_xmalloc
void *xmalloc(unsigned);
void *xrealloc(void *, unsigned);
-#define xfree(x) free(x)
+#define sh_xfree(x) free(x)
#endif
void *xmalloc_zero(unsigned);
-byte *stralloc(byte *);
-
-/* Objects */
-
-struct fastbuf;
-
-struct odes { /* Object description */
- struct oattr *attrs;
- struct mempool *pool;
- struct oattr *cached_attr;
-};
-
-struct oattr { /* Object attribute */
- struct oattr *next, *same;
- byte attr;
- byte val[1];
-};
-
-void obj_dump(struct odes *);
-struct odes *obj_new(struct mempool *);
-int obj_read(struct fastbuf *, struct odes *);
-void obj_write(struct fastbuf *, struct odes *);
-struct oattr *obj_find_attr(struct odes *, uns);
-struct oattr *obj_find_attr_last(struct odes *, uns);
-uns obj_del_attr(struct odes *, struct oattr *);
-byte *obj_find_aval(struct odes *, uns);
-struct oattr *obj_set_attr(struct odes *, uns, byte *);
-struct oattr *obj_set_attr_num(struct odes *, uns, uns);
-struct oattr *obj_add_attr(struct odes *, uns, byte *);
-struct oattr *obj_prepend_attr(struct odes *, uns, byte *);
-struct oattr *obj_insert_attr(struct odes *o, struct oattr *first, struct oattr *after, byte *v);
+byte *xstrdup(byte *);
/* Content-Type pattern matching and filters */
/* log2.c */
-int log2(u32);
+int fls(u32);
/* wordsplit.c */
+int sepsplit(byte *str, byte sep, byte **rec, uns max);
int wordsplit(byte *, byte **, uns);
/* pat(i)match.c: Matching of shell patterns */
void *mmap_file(byte *name, unsigned *len, int writeable);
void munmap_file(void *start, unsigned len);
+/* partmap.c */
+
+struct partmap;
+struct partmap *partmap_open(byte *name, int writeable);
+void *partmap_map(struct partmap *p, sh_off_t offset, uns size);
+void partmap_close(struct partmap *p);
+sh_off_t partmap_size(struct partmap *p);
+
/* proctitle.c */
void setproctitle_init(int argc, char **argv);
void randomkey(byte *buf, uns size);
+/* exitstatus.c */
+
+#define EXIT_STATUS_MSG_SIZE 32
+int format_exit_status(byte *msg, int stat);
+
+/* runcmd.c */
+
+int run_command(byte *cmd, ...);
+void NONRET exec_command(byte *cmd, ...);
+void echo_command(byte *buf, int size, byte *cmd, ...);
+int run_command_v(byte *cmd, va_list args);
+void NONRET exec_command_v(byte *cmd, va_list args);
+void echo_command_v(byte *buf, int size, byte *cmd, va_list args);
+
+/* carefulio.c */
+
+int careful_read(int fd, void *buf, int len);
+int careful_write(int fd, void *buf, int len);
+
+/* sync.c */
+
+void sync_dir(byte *name);
+
+/* sighandler.c */
+
+typedef int (*sh_sighandler_t)(int);
+ /* obtains signum, returns nonzero if abort() should be called */
+extern sh_sighandler_t signal_handler[];
+
+struct sigaction;
+void handle_signal(int signum, struct sigaction *oldact);
+void unhandle_signal(int signum, struct sigaction *oldact);
+
#endif