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