hush/libbb/xfuncs.c

200 lines
3.2 KiB
C
Raw Normal View History

/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
2002-09-25 02:47:48 +00:00
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
2002-09-25 02:47:48 +00:00
#include <fcntl.h>
/* Since gcc always inlines strlen(), this saves a byte or two, but we need
* the #undef here to avoid endless loop from #define strlen bb_strlen */
#ifdef L_strlen
#define BB_STRLEN_IMPLEMENTATION
#endif
#include "libbb.h"
#ifndef DMALLOC
2003-03-19 09:13:01 +00:00
#ifdef L_xmalloc
void *xmalloc(size_t size)
{
void *ptr = malloc(size);
if (ptr == NULL && size != 0)
2003-03-19 09:13:01 +00:00
bb_error_msg_and_die(bb_msg_memory_exhausted);
return ptr;
}
2003-03-19 09:13:01 +00:00
#endif
2003-03-19 09:13:01 +00:00
#ifdef L_xrealloc
void *xrealloc(void *ptr, size_t size)
{
ptr = realloc(ptr, size);
if (ptr == NULL && size != 0)
2003-03-19 09:13:01 +00:00
bb_error_msg_and_die(bb_msg_memory_exhausted);
return ptr;
}
2003-03-19 09:13:01 +00:00
#endif
2003-03-19 09:13:01 +00:00
#ifdef L_xcalloc
void *xcalloc(size_t nmemb, size_t size)
{
void *ptr = calloc(nmemb, size);
if (ptr == NULL && nmemb != 0 && size != 0)
2003-03-19 09:13:01 +00:00
bb_error_msg_and_die(bb_msg_memory_exhausted);
return ptr;
}
2003-03-19 09:13:01 +00:00
#endif
2003-07-05 22:15:43 +00:00
#endif /* DMALLOC */
2003-03-19 09:13:01 +00:00
#ifdef L_xstrdup
char * bb_xstrdup (const char *s)
{
char *t;
if (s == NULL)
return NULL;
t = strdup (s);
if (t == NULL)
2003-03-19 09:13:01 +00:00
bb_error_msg_and_die(bb_msg_memory_exhausted);
return t;
}
#endif
2003-03-19 09:13:01 +00:00
#ifdef L_xstrndup
char * bb_xstrndup (const char *s, int n)
{
char *t;
if (s == NULL)
2003-03-19 09:13:01 +00:00
bb_error_msg_and_die("bb_xstrndup bug");
t = xmalloc(++n);
return safe_strncpy(t,s,n);
}
2003-03-19 09:13:01 +00:00
#endif
2003-03-19 09:13:01 +00:00
#ifdef L_xfopen
FILE *bb_xfopen(const char *path, const char *mode)
{
FILE *fp;
if ((fp = fopen(path, mode)) == NULL)
2003-03-19 09:13:01 +00:00
bb_perror_msg_and_die("%s", path);
return fp;
}
2003-03-19 09:13:01 +00:00
#endif
2003-03-19 09:13:01 +00:00
#ifdef L_xopen
int bb_xopen(const char *pathname, int flags)
{
return bb_xopen3(pathname, flags, 0777);
}
#endif
#ifdef L_xopen3
int bb_xopen3(const char *pathname, int flags, int mode)
2002-09-25 02:47:48 +00:00
{
int ret;
ret = open(pathname, flags, mode);
if (ret < 0) {
2003-03-19 09:13:01 +00:00
bb_perror_msg_and_die("%s", pathname);
2002-09-25 02:47:48 +00:00
}
return ret;
}
2003-03-19 09:13:01 +00:00
#endif
2002-09-25 02:47:48 +00:00
2003-03-19 09:13:01 +00:00
#ifdef L_xread
ssize_t bb_xread(int fd, void *buf, size_t count)
2002-09-25 02:47:48 +00:00
{
ssize_t size;
size = read(fd, buf, count);
if (size < 0) {
2005-11-25 11:36:36 +00:00
bb_perror_msg_and_die(bb_msg_read_error);
2002-09-25 02:47:48 +00:00
}
return(size);
}
2003-03-19 09:13:01 +00:00
#endif
2002-09-25 02:47:48 +00:00
2003-03-19 09:13:01 +00:00
#ifdef L_xread_all
void bb_xread_all(int fd, void *buf, size_t count)
2002-09-25 02:47:48 +00:00
{
ssize_t size;
2003-03-19 09:13:01 +00:00
while (count) {
if ((size = bb_xread(fd, buf, count)) == 0) { /* EOF */
bb_error_msg_and_die("Short read");
}
count -= size;
2004-03-08 05:44:30 +00:00
buf = ((char *) buf) + size;
2002-09-25 02:47:48 +00:00
}
return;
}
2003-03-19 09:13:01 +00:00
#endif
2002-09-25 02:47:48 +00:00
2003-03-19 09:13:01 +00:00
#ifdef L_xread_char
unsigned char bb_xread_char(int fd)
2002-09-25 02:47:48 +00:00
{
char tmp;
2003-03-19 09:13:01 +00:00
bb_xread_all(fd, &tmp, 1);
2002-09-25 02:47:48 +00:00
return(tmp);
2002-09-25 02:47:48 +00:00
}
2003-03-19 09:13:01 +00:00
#endif
#ifdef L_xferror
void bb_xferror(FILE *fp, const char *fn)
2003-03-19 09:13:01 +00:00
{
if (ferror(fp)) {
bb_error_msg_and_die("%s", fn);
}
}
#endif
#ifdef L_xferror_stdout
void bb_xferror_stdout(void)
2003-03-19 09:13:01 +00:00
{
bb_xferror(stdout, bb_msg_standard_output);
}
#endif
#ifdef L_xfflush_stdout
void bb_xfflush_stdout(void)
2003-03-19 09:13:01 +00:00
{
if (fflush(stdout)) {
bb_perror_msg_and_die(bb_msg_standard_output);
}
}
#endif
2002-09-25 02:47:48 +00:00
2003-03-19 09:13:01 +00:00
#ifdef L_strlen
size_t bb_strlen(const char *string)
{
return(strlen(string));
}
2003-03-19 09:13:01 +00:00
#endif
/* END CODE */
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/