X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=lib%2Flib.h;h=614b88c8e5d14cfb5d84e39476330bdd68ccbb2f;hb=a1da13d220a351aa3abdcb61fce89bc61db6796f;hp=12e79ec5c589e824b92d7d5b38282a5746572c30;hpb=5235a735d59c73f528a4b1e9d212d63673005ddb;p=libucw.git diff --git a/lib/lib.h b/lib/lib.h index 12e79ec5..614b88c8 100644 --- a/lib/lib.h +++ b/lib/lib.h @@ -1,33 +1,32 @@ /* - * Sherlock Library -- Miscellaneous Functions + * The UCW Library -- Miscellaneous Functions * - * (c) 1997--2001 Martin Mares + * (c) 1997--2006 Martin Mares + * (c) 2005 Tomas Valla * * This software may be freely distributed and used according to the terms * of the GNU Lesser General Public License. */ -/* - * This file should be included as the very first include in all - * source files, especially before all OS includes since it sets - * up libc feature macros. - */ - -#ifndef _SHERLOCK_LIB_H -#define _SHERLOCK_LIB_H +#ifndef _UCW_LIB_H +#define _UCW_LIB_H #include "lib/config.h" +#include /* Tell libc we're going to use all extensions available */ +#ifndef _GNU_SOURCE #define _GNU_SOURCE +#endif /* Ugly structure handling macros */ #define OFFSETOF(s, i) ((unsigned int)&((s *)0)->i) #define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i))) #define ALIGN(s, a) (((s)+a-1)&~(a-1)) -#define UNALIGNED_PART(ptr, type) (((long) (ptr)) % sizeof(type)) +#define ALIGN_PTR(p, s) ((addr_int_t)(p) % (s) ? (typeof(p))((addr_int_t)(p) + (s) - (addr_int_t)(p) % (s)) : (p)) +#define UNALIGNED_PART(ptr, type) (((addr_int_t) (ptr)) % sizeof(type)) /* Some other macros */ @@ -36,6 +35,36 @@ #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 STRINGIFY_EXPANDED(x) STRINGIFY(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) +#define COMPARE_LT(x,y) do { if ((x)<(y)) return 1; if ((x)>(y)) return 0; } while(0) +#define COMPARE_GT(x,y) COMPARE_LT(y,x) + +#define ROL(x, bits) (((x) << (bits)) | ((x) >> (sizeof(uns)*8 - (bits)))) /* Bitwise rotation of an uns to the left */ + +/* GCC Extensions */ + +#ifdef __GNUC__ + +#undef inline +#define NONRET __attribute__((noreturn)) +#define UNUSED __attribute__((unused)) +#define CONSTRUCTOR __attribute__((constructor)) +#define PACKED __attribute__((packed)) +#define CONST __attribute__((const)) +#define PURE __attribute__((const)) +#define FORMAT_CHECK(x,y,z) __attribute__((format(x,y,z))) +#define likely(x) __builtin_expect((x),1) +#define unlikely(x) __builtin_expect((x),0) + +#else +#error This program requires the GNU C compiler. +#endif /* Logging */ @@ -48,29 +77,51 @@ #define L_ERROR_R 'e' #define L_FATAL '!' /* die() */ -void log(unsigned int cat, const char *msg, ...) __attribute__((format(printf,2,3))); -void die(byte *, ...) NONRET; -void log_init(byte *); -void log_file(byte *); +extern char *log_title; /* NULL - print no title, default is log_progname */ +extern char *log_filename; /* Expanded name of the current log file */ +extern volatile int log_switch_nest; /* log_switch() nesting counter, increment to disable automatic switches */ +extern int log_pid; /* 0 if shouldn't be logged */ +extern int log_precise_timings; /* Include microsecond timestamps in log messages */ +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, ...) FORMAT_CHECK(printf,2,3); +#define log log_msg +void vlog_msg(unsigned int cat, const char *msg, va_list args); +void die(const char *, ...) NONRET FORMAT_CHECK(printf,1,2); +void log_init(byte *argv0); +void log_file(byte *name); void log_fork(void); +int 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 @@ -78,65 +129,30 @@ void assert_failed(void) NONRET; */ #define DMALLOC_DISABLE #include -#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) +void xfree(void *); #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 *); -void obj_write_nocheck(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 */ int match_ct_patt(byte *, byte *); -/* log2.c */ - -int log2(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 */ @@ -157,10 +173,18 @@ void hex_to_md5(byte *, byte *); int isprime(uns); uns nextprime(uns); +/* primetable.c */ + +uns next_table_prime(uns x); +uns prev_table_prime(uns x); + /* timer.c */ +struct timeval; + void init_timer(void); uns get_timer(void); +void get_last_timeval(struct timeval *tv); /* regex.c */ @@ -183,10 +207,44 @@ void munmap_file(void *start, unsigned len); /* proctitle.c */ void setproctitle_init(int argc, char **argv); -void setproctitle(char *msg, ...) __attribute__((format(printf,1,2))); +void setproctitle(char *msg, ...) FORMAT_CHECK(printf,1,2); +char *getproctitle(void); /* randomkey.c */ 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