+++ /dev/null
-/*
-Copyright (c) 2001-2006, Gerrit Pape
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
- 3. The name of the author may not be used to endorse or promote products
- derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
-WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
-EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
-OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* Busyboxed by Denys Vlasenko <vda.linux@googlemail.com> */
-/* Collected into one file from runit's many tiny files */
-/* TODO: review, eliminate unneeded stuff, move good stuff to libbb */
-
-#include <sys/poll.h>
-#include <sys/file.h>
-#include "libbb.h"
-#include "runit_lib.h"
-
-#ifdef UNUSED
-unsigned byte_chr(char *s,unsigned n,int c)
-{
- char ch;
- char *t;
-
- ch = c;
- t = s;
- for (;;) {
- if (!n) break;
- if (*t == ch) break;
- ++t;
- --n;
- }
- return t - s;
-}
-
-static /* as it isn't used anywhere else */
-void tai_pack(char *s, const struct tai *t)
-{
- uint64_t x;
-
- x = t->x;
- s[7] = x & 255; x >>= 8;
- s[6] = x & 255; x >>= 8;
- s[5] = x & 255; x >>= 8;
- s[4] = x & 255; x >>= 8;
- s[3] = x & 255; x >>= 8;
- s[2] = x & 255; x >>= 8;
- s[1] = x & 255; x >>= 8;
- s[0] = x;
-}
-
-void tai_unpack(const char *s,struct tai *t)
-{
- uint64_t x;
-
- x = (unsigned char) s[0];
- x <<= 8; x += (unsigned char) s[1];
- x <<= 8; x += (unsigned char) s[2];
- x <<= 8; x += (unsigned char) s[3];
- x <<= 8; x += (unsigned char) s[4];
- x <<= 8; x += (unsigned char) s[5];
- x <<= 8; x += (unsigned char) s[6];
- x <<= 8; x += (unsigned char) s[7];
- t->x = x;
-}
-
-
-void taia_add(struct taia *t,const struct taia *u,const struct taia *v)
-{
- t->sec.x = u->sec.x + v->sec.x;
- t->nano = u->nano + v->nano;
- t->atto = u->atto + v->atto;
- if (t->atto > 999999999UL) {
- t->atto -= 1000000000UL;
- ++t->nano;
- }
- if (t->nano > 999999999UL) {
- t->nano -= 1000000000UL;
- ++t->sec.x;
- }
-}
-
-int taia_less(const struct taia *t, const struct taia *u)
-{
- if (t->sec.x < u->sec.x) return 1;
- if (t->sec.x > u->sec.x) return 0;
- if (t->nano < u->nano) return 1;
- if (t->nano > u->nano) return 0;
- return t->atto < u->atto;
-}
-
-void taia_now(struct taia *t)
-{
- struct timeval now;
- gettimeofday(&now, NULL);
- tai_unix(&t->sec, now.tv_sec);
- t->nano = 1000 * now.tv_usec + 500;
- t->atto = 0;
-}
-
-/* UNUSED
-void taia_pack(char *s, const struct taia *t)
-{
- unsigned long x;
-
- tai_pack(s, &t->sec);
- s += 8;
-
- x = t->atto;
- s[7] = x & 255; x >>= 8;
- s[6] = x & 255; x >>= 8;
- s[5] = x & 255; x >>= 8;
- s[4] = x;
- x = t->nano;
- s[3] = x & 255; x >>= 8;
- s[2] = x & 255; x >>= 8;
- s[1] = x & 255; x >>= 8;
- s[0] = x;
-}
-*/
-
-void taia_sub(struct taia *t, const struct taia *u, const struct taia *v)
-{
- unsigned long unano = u->nano;
- unsigned long uatto = u->atto;
-
- t->sec.x = u->sec.x - v->sec.x;
- t->nano = unano - v->nano;
- t->atto = uatto - v->atto;
- if (t->atto > uatto) {
- t->atto += 1000000000UL;
- --t->nano;
- }
- if (t->nano > unano) {
- t->nano += 1000000000UL;
- --t->sec.x;
- }
-}
-
-/* XXX: breaks tai encapsulation */
-void taia_uint(struct taia *t, unsigned s)
-{
- t->sec.x = s;
- t->nano = 0;
- t->atto = 0;
-}
-
-static
-uint64_t taia2millisec(const struct taia *t)
-{
- return (t->sec.x * 1000) + (t->nano / 1000000);
-}
-
-void iopause(iopause_fd *x, unsigned len, struct taia *deadline, struct taia *stamp)
-{
- int millisecs;
- int i;
-
- if (taia_less(deadline, stamp))
- millisecs = 0;
- else {
- uint64_t m;
- struct taia t;
- t = *stamp;
- taia_sub(&t, deadline, &t);
- millisecs = m = taia2millisec(&t);
- if (m > 1000) millisecs = 1000;
- millisecs += 20;
- }
-
- for (i = 0; i < len; ++i)
- x[i].revents = 0;
-
- poll(x, len, millisecs);
- /* XXX: some kernels apparently need x[0] even if len is 0 */
- /* XXX: how to handle EAGAIN? are kernels really this dumb? */
- /* XXX: how to handle EINVAL? when exactly can this happen? */
-}
-#endif
-
-int lock_ex(int fd)
-{
- return flock(fd, LOCK_EX);
-}
-
-int lock_exnb(int fd)
-{
- return flock(fd, LOCK_EX | LOCK_NB);
-}
-
-#ifdef UNUSED
-int open_append(const char *fn)
-{
- return open(fn, O_WRONLY | O_NDELAY | O_APPEND | O_CREAT, 0600);
-}
-
-int open_trunc(const char *fn)
-{
- return open(fn, O_WRONLY | O_NDELAY | O_TRUNC | O_CREAT, 0644);
-}
-#endif
-
-int open_read(const char *fn)
-{
- return open(fn, O_RDONLY|O_NDELAY);
-}
-
-int open_write(const char *fn)
-{
- return open(fn, O_WRONLY|O_NDELAY);
-}
-
-unsigned FAST_FUNC pmatch(const char *p, const char *s, unsigned len)
-{
- for (;;) {
- char c = *p++;
- if (!c) return !len;
- switch (c) {
- case '*':
- c = *p;
- if (!c) return 1;
- for (;;) {
- if (!len) return 0;
- if (*s == c) break;
- ++s;
- --len;
- }
- continue;
- case '+':
- c = *p++;
- if (c != *s) return 0;
- for (;;) {
- if (!len) return 1;
- if (*s != c) break;
- ++s;
- --len;
- }
- continue;
- /*
- case '?':
- if (*p == '?') {
- if (*s != '?') return 0;
- ++p;
- }
- ++s; --len;
- continue;
- */
- default:
- if (!len) return 0;
- if (*s != c) return 0;
- ++s;
- --len;
- continue;
- }
- }
- return 0;
-}
PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
-//extern unsigned byte_chr(char *s,unsigned n,int c);
-//
-//struct tai {
-// uint64_t x;
-//};
-//
-//#define tai_unix(t,u) ((void) ((t)->x = 0x400000000000000aULL + (uint64_t) (u)))
-//
-//#define TAI_PACK 8
-//extern void tai_unpack(const char *,struct tai *);
-//
-//extern void tai_uint(struct tai *,unsigned);
-//
-//struct taia {
-// struct tai sec;
-// unsigned long nano; /* 0...999999999 */
-// unsigned long atto; /* 0...999999999 */
-//};
-//
-//extern void taia_now(struct taia *);
-//
-//extern void taia_add(struct taia *,const struct taia *,const struct taia *);
-//extern void taia_addsec(struct taia *,const struct taia *,int);
-//extern void taia_sub(struct taia *,const struct taia *,const struct taia *);
-//extern void taia_half(struct taia *,const struct taia *);
-//extern int taia_less(const struct taia *,const struct taia *);
-//
-//#define TAIA_PACK 16
-//extern void taia_pack(char *,const struct taia *);
-//
-//extern void taia_uint(struct taia *,unsigned);
-//
-//typedef struct pollfd iopause_fd;
-//#define IOPAUSE_READ POLLIN
-//#define IOPAUSE_WRITE POLLOUT
-//
-//extern void iopause(iopause_fd *,unsigned,struct taia *,struct taia *);
-
-extern int lock_ex(int);
-//extern int lock_un(int);
-extern int lock_exnb(int);
-
-extern int open_read(const char *);
-extern int open_write(const char *);
-//extern int open_excl(const char *);
-//extern int open_append(const char *);
-//extern int open_trunc(const char *);
-
-extern unsigned FAST_FUNC pmatch(const char *, const char *, unsigned);
-
-//#define str_diff(s,t) strcmp((s), (t))
-#define str_equal(s,t) (!strcmp((s), (t)))
-
/*
* runsv / supervise / sv stuff
*/
projects / platform / upstream / busybox.git / commitdiff