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/*
* libdpkg - Debian packaging suite library routines
* mlib.c - ‘must’ library: routines will succeed or longjmp
*
* Copyright © 1994,1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
* Copyright © 2006-2013, 2015 Guillem Jover <guillem@debian.org>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <compat.h>
#include <sys/types.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <dpkg/i18n.h>
#include <dpkg/dpkg.h>
static inline void *
must_alloc(void *ptr)
{
if (ptr)
return ptr;
onerr_abort++;
ohshite(_("failed to allocate memory"));
}
void *m_malloc(size_t amount) {
return must_alloc(malloc(amount));
}
void *
m_calloc(size_t nmemb, size_t size)
{
return must_alloc(calloc(nmemb, size));
}
void *m_realloc(void *r, size_t amount) {
return must_alloc(realloc(r, amount));
}
char *
m_strdup(const char *str)
{
return must_alloc(strdup(str));
}
char *
m_strndup(const char *str, size_t n)
{
return must_alloc(strndup(str, n));
}
int
m_vasprintf(char **strp, const char *fmt, va_list args)
{
int n;
n = vasprintf(strp, fmt, args);
if (n >= 0)
return n;
onerr_abort++;
ohshite(_("failed to allocate memory"));
}
int
m_asprintf(char **strp, const char *fmt, ...)
{
va_list args;
int n;
va_start(args, fmt);
n = m_vasprintf(strp, fmt, args);
va_end(args);
return n;
}
int
m_dup(int oldfd)
{
int newfd;
newfd = dup(oldfd);
if (newfd >= 0)
return newfd;
onerr_abort++;
ohshite(_("failed to dup for fd %d"), oldfd);
}
void m_dup2(int oldfd, int newfd) {
const char *const stdstrings[]= { "in", "out", "err" };
if (dup2(oldfd,newfd) == newfd) return;
onerr_abort++;
if (newfd < 3) ohshite(_("failed to dup for std%s"),stdstrings[newfd]);
ohshite(_("failed to dup for fd %d"),newfd);
}
void
m_pipe(int fds[2])
{
if (!pipe(fds)) return;
onerr_abort++;
ohshite(_("failed to create pipe"));
}
void
m_output(FILE *f, const char *name)
{
fflush(f);
if (ferror(f) && errno != EPIPE)
ohshite(_("error writing to '%s'"), name);
}
void
setcloexec(int fd, const char *fn)
{
int f;
f = fcntl(fd, F_GETFD);
if (f == -1)
ohshite(_("unable to read filedescriptor flags for %.250s"),fn);
if (fcntl(fd, F_SETFD, (f|FD_CLOEXEC))==-1)
ohshite(_("unable to set close-on-exec flag for %.250s"),fn);
}
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