2004-10-28 16:03:53 +00:00
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2002-06-27 22:31:32 +00:00
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/*
|
2004-02-26 10:38:49 +00:00
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* Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org>
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2002-06-27 22:31:32 +00:00
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*
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2004-02-26 10:38:49 +00:00
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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2002-06-27 22:31:32 +00:00
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*
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2004-02-26 10:38:49 +00:00
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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2002-06-27 22:31:32 +00:00
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*/
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#include "includes.h"
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|
|
2008-07-23 09:23:42 +00:00
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|
|
#include <sys/types.h>
|
2006-09-30 13:29:51 +00:00
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|
|
#ifdef HAVE_SYS_SELECT_H
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|
|
# include <sys/select.h>
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|
|
#endif
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|
#ifdef HAVE_SYS_TIME_H
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|
|
# include <sys/time.h>
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|
|
#endif
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|
|
|
2020-02-14 19:47:15 +00:00
|
|
|
#include <fcntl.h>
|
2006-09-30 13:29:51 +00:00
|
|
|
#include <string.h>
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|
|
#include <signal.h>
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|
|
#include <stdlib.h>
|
2018-08-28 10:47:58 +00:00
|
|
|
#include <stdio.h>
|
2014-01-30 10:56:49 +00:00
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|
#include <time.h>
|
2008-07-23 09:23:42 +00:00
|
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|
#include <unistd.h>
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2006-09-30 13:29:51 +00:00
|
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|
2004-10-28 16:03:53 +00:00
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|
|
#ifndef HAVE___PROGNAME
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|
char *__progname;
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|
|
#endif
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2002-06-27 22:31:32 +00:00
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|
|
2003-04-23 16:53:02 +00:00
|
|
|
/*
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|
|
|
* NB. duplicate __progname in case it is an alias for argv[0]
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* Otherwise it may get clobbered by setproctitle()
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|
*/
|
2004-01-07 11:10:17 +00:00
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char *ssh_get_progname(char *argv0)
|
2002-06-27 22:31:32 +00:00
|
|
|
{
|
2015-07-02 13:15:34 +00:00
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|
char *p, *q;
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2002-06-27 22:31:32 +00:00
|
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|
#ifdef HAVE___PROGNAME
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|
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extern char *__progname;
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|
2015-07-02 13:15:34 +00:00
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p = __progname;
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2002-06-27 22:31:32 +00:00
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#else
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if (argv0 == NULL)
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2004-01-07 11:10:17 +00:00
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return ("unknown"); /* XXX */
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2002-06-27 22:31:32 +00:00
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p = strrchr(argv0, '/');
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|
if (p == NULL)
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|
p = argv0;
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|
else
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|
p++;
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|
|
#endif
|
2015-07-02 13:15:34 +00:00
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|
if ((q = strdup(p)) == NULL) {
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|
perror("strdup");
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exit(1);
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}
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return q;
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2002-06-27 22:31:32 +00:00
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}
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|
#ifndef HAVE_SETLOGIN
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int setlogin(const char *name)
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{
|
2004-01-07 11:10:17 +00:00
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|
return (0);
|
2002-06-27 22:31:32 +00:00
|
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|
}
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|
#endif /* !HAVE_SETLOGIN */
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|
#ifndef HAVE_INNETGR
|
2017-01-31 12:33:47 +00:00
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int innetgr(const char *netgroup, const char *host,
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|
|
const char *user, const char *domain)
|
2002-06-27 22:31:32 +00:00
|
|
|
{
|
2004-01-07 11:10:17 +00:00
|
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|
return (0);
|
2002-06-27 22:31:32 +00:00
|
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|
}
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|
|
#endif /* HAVE_INNETGR */
|
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|
|
#if !defined(HAVE_SETEUID) && defined(HAVE_SETREUID)
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|
|
int seteuid(uid_t euid)
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|
|
|
{
|
2004-01-07 11:10:17 +00:00
|
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|
return (setreuid(-1, euid));
|
2002-06-27 22:31:32 +00:00
|
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|
}
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|
#endif /* !defined(HAVE_SETEUID) && defined(HAVE_SETREUID) */
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|
#if !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID)
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|
|
int setegid(uid_t egid)
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|
|
|
{
|
2004-01-07 11:10:17 +00:00
|
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|
return(setresgid(-1, egid, -1));
|
2002-06-27 22:31:32 +00:00
|
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|
}
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|
#endif /* !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID) */
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|
#if !defined(HAVE_STRERROR) && defined(HAVE_SYS_ERRLIST) && defined(HAVE_SYS_NERR)
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|
|
const char *strerror(int e)
|
|
|
|
{
|
|
|
|
extern int sys_nerr;
|
|
|
|
extern char *sys_errlist[];
|
2017-01-31 12:33:47 +00:00
|
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|
2002-06-27 22:31:32 +00:00
|
|
|
if ((e >= 0) && (e < sys_nerr))
|
2004-01-07 11:10:17 +00:00
|
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|
return (sys_errlist[e]);
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|
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|
|
return ("unlisted error");
|
2002-06-27 22:31:32 +00:00
|
|
|
}
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|
|
|
#endif
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|
|
#ifndef HAVE_UTIMES
|
2022-04-08 17:19:17 +00:00
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|
|
int utimes(const char *filename, struct timeval *tvp)
|
2002-06-27 22:31:32 +00:00
|
|
|
{
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|
|
|
struct utimbuf ub;
|
|
|
|
|
2002-10-29 09:43:00 +00:00
|
|
|
ub.actime = tvp[0].tv_sec;
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|
|
|
ub.modtime = tvp[1].tv_sec;
|
2017-01-31 12:33:47 +00:00
|
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|
|
2004-01-07 11:10:17 +00:00
|
|
|
return (utime(filename, &ub));
|
2002-06-27 22:31:32 +00:00
|
|
|
}
|
2017-01-31 12:33:47 +00:00
|
|
|
#endif
|
2002-06-27 22:31:32 +00:00
|
|
|
|
2020-02-14 19:47:15 +00:00
|
|
|
#ifndef HAVE_UTIMENSAT
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|
|
|
/*
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|
* A limited implementation of utimensat() that only implements the
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|
|
* functionality used by OpenSSH, currently only AT_FDCWD and
|
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|
|
* AT_SYMLINK_NOFOLLOW.
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|
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|
*/
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|
int
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utimensat(int fd, const char *path, const struct timespec times[2],
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|
|
int flag)
|
|
|
|
{
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|
|
|
struct timeval tv[2];
|
2021-02-14 21:07:21 +00:00
|
|
|
# ifdef HAVE_FUTIMES
|
2020-02-14 19:47:15 +00:00
|
|
|
int ret, oflags = O_WRONLY;
|
2021-02-14 21:07:21 +00:00
|
|
|
# endif
|
2020-02-14 19:47:15 +00:00
|
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tv[0].tv_sec = times[0].tv_sec;
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|
tv[0].tv_usec = times[0].tv_nsec / 1000;
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|
tv[1].tv_sec = times[1].tv_sec;
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|
tv[1].tv_usec = times[1].tv_nsec / 1000;
|
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|
|
|
|
|
|
if (fd != AT_FDCWD) {
|
|
|
|
errno = ENOSYS;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
# ifndef HAVE_FUTIMES
|
|
|
|
return utimes(path, tv);
|
|
|
|
# else
|
|
|
|
# ifdef O_NOFOLLOW
|
|
|
|
if (flag & AT_SYMLINK_NOFOLLOW)
|
|
|
|
oflags |= O_NOFOLLOW;
|
|
|
|
# endif /* O_NOFOLLOW */
|
|
|
|
if ((fd = open(path, oflags)) == -1)
|
|
|
|
return -1;
|
|
|
|
ret = futimes(fd, tv);
|
|
|
|
close(fd);
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|
|
|
return ret;
|
|
|
|
# endif
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef HAVE_FCHOWNAT
|
|
|
|
/*
|
|
|
|
* A limited implementation of fchownat() that only implements the
|
|
|
|
* functionality used by OpenSSH, currently only AT_FDCWD and
|
|
|
|
* AT_SYMLINK_NOFOLLOW.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
fchownat(int fd, const char *path, uid_t owner, gid_t group, int flag)
|
|
|
|
{
|
|
|
|
int ret, oflags = O_WRONLY;
|
|
|
|
|
|
|
|
if (fd != AT_FDCWD) {
|
|
|
|
errno = ENOSYS;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
# ifndef HAVE_FCHOWN
|
2021-02-14 21:00:25 +00:00
|
|
|
return chown(path, owner, group);
|
2020-02-14 19:47:15 +00:00
|
|
|
# else
|
|
|
|
# ifdef O_NOFOLLOW
|
|
|
|
if (flag & AT_SYMLINK_NOFOLLOW)
|
|
|
|
oflags |= O_NOFOLLOW;
|
|
|
|
# endif /* O_NOFOLLOW */
|
|
|
|
if ((fd = open(path, oflags)) == -1)
|
|
|
|
return -1;
|
|
|
|
ret = fchown(fd, owner, group);
|
|
|
|
close(fd);
|
|
|
|
return ret;
|
|
|
|
# endif
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef HAVE_FCHMODAT
|
|
|
|
/*
|
|
|
|
* A limited implementation of fchmodat() that only implements the
|
|
|
|
* functionality used by OpenSSH, currently only AT_FDCWD and
|
|
|
|
* AT_SYMLINK_NOFOLLOW.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
fchmodat(int fd, const char *path, mode_t mode, int flag)
|
|
|
|
{
|
|
|
|
int ret, oflags = O_WRONLY;
|
|
|
|
|
|
|
|
if (fd != AT_FDCWD) {
|
|
|
|
errno = ENOSYS;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
# ifndef HAVE_FCHMOD
|
2021-02-14 21:00:25 +00:00
|
|
|
return chmod(path, mode);
|
2020-02-14 19:47:15 +00:00
|
|
|
# else
|
|
|
|
# ifdef O_NOFOLLOW
|
|
|
|
if (flag & AT_SYMLINK_NOFOLLOW)
|
|
|
|
oflags |= O_NOFOLLOW;
|
|
|
|
# endif /* O_NOFOLLOW */
|
|
|
|
if ((fd = open(path, oflags)) == -1)
|
|
|
|
return -1;
|
|
|
|
ret = fchmod(fd, mode);
|
|
|
|
close(fd);
|
|
|
|
return ret;
|
|
|
|
# endif
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2002-06-27 22:31:32 +00:00
|
|
|
#ifndef HAVE_TRUNCATE
|
2004-01-07 11:10:17 +00:00
|
|
|
int truncate(const char *path, off_t length)
|
2002-06-27 22:31:32 +00:00
|
|
|
{
|
|
|
|
int fd, ret, saverrno;
|
|
|
|
|
|
|
|
fd = open(path, O_WRONLY);
|
|
|
|
if (fd < 0)
|
2004-01-07 11:10:17 +00:00
|
|
|
return (-1);
|
2002-06-27 22:31:32 +00:00
|
|
|
|
|
|
|
ret = ftruncate(fd, length);
|
|
|
|
saverrno = errno;
|
2004-01-07 11:10:17 +00:00
|
|
|
close(fd);
|
2002-06-27 22:31:32 +00:00
|
|
|
if (ret == -1)
|
|
|
|
errno = saverrno;
|
2004-01-07 11:10:17 +00:00
|
|
|
|
2002-06-27 22:31:32 +00:00
|
|
|
return(ret);
|
|
|
|
}
|
|
|
|
#endif /* HAVE_TRUNCATE */
|
|
|
|
|
2003-04-23 16:53:02 +00:00
|
|
|
#if !defined(HAVE_NANOSLEEP) && !defined(HAVE_NSLEEP)
|
|
|
|
int nanosleep(const struct timespec *req, struct timespec *rem)
|
|
|
|
{
|
|
|
|
int rc, saverrno;
|
|
|
|
extern int errno;
|
|
|
|
struct timeval tstart, tstop, tremain, time2wait;
|
|
|
|
|
|
|
|
TIMESPEC_TO_TIMEVAL(&time2wait, req)
|
|
|
|
(void) gettimeofday(&tstart, NULL);
|
|
|
|
rc = select(0, NULL, NULL, NULL, &time2wait);
|
|
|
|
if (rc == -1) {
|
|
|
|
saverrno = errno;
|
|
|
|
(void) gettimeofday (&tstop, NULL);
|
|
|
|
errno = saverrno;
|
2017-01-31 12:33:47 +00:00
|
|
|
tremain.tv_sec = time2wait.tv_sec -
|
2003-04-23 16:53:02 +00:00
|
|
|
(tstop.tv_sec - tstart.tv_sec);
|
2017-01-31 12:33:47 +00:00
|
|
|
tremain.tv_usec = time2wait.tv_usec -
|
2003-04-23 16:53:02 +00:00
|
|
|
(tstop.tv_usec - tstart.tv_usec);
|
|
|
|
tremain.tv_sec += tremain.tv_usec / 1000000L;
|
|
|
|
tremain.tv_usec %= 1000000L;
|
|
|
|
} else {
|
|
|
|
tremain.tv_sec = 0;
|
|
|
|
tremain.tv_usec = 0;
|
|
|
|
}
|
2008-07-23 09:23:42 +00:00
|
|
|
if (rem != NULL)
|
|
|
|
TIMEVAL_TO_TIMESPEC(&tremain, rem)
|
2003-04-23 16:53:02 +00:00
|
|
|
|
|
|
|
return(rc);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2013-03-22 11:19:48 +00:00
|
|
|
#if !defined(HAVE_USLEEP)
|
|
|
|
int usleep(unsigned int useconds)
|
|
|
|
{
|
|
|
|
struct timespec ts;
|
|
|
|
|
|
|
|
ts.tv_sec = useconds / 1000000;
|
|
|
|
ts.tv_nsec = (useconds % 1000000) * 1000;
|
|
|
|
return nanosleep(&ts, NULL);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2004-01-07 11:10:17 +00:00
|
|
|
#ifndef HAVE_TCGETPGRP
|
|
|
|
pid_t
|
|
|
|
tcgetpgrp(int fd)
|
|
|
|
{
|
|
|
|
int ctty_pgrp;
|
|
|
|
|
|
|
|
if (ioctl(fd, TIOCGPGRP, &ctty_pgrp) == -1)
|
|
|
|
return(-1);
|
|
|
|
else
|
|
|
|
return(ctty_pgrp);
|
|
|
|
}
|
|
|
|
#endif /* HAVE_TCGETPGRP */
|
|
|
|
|
|
|
|
#ifndef HAVE_TCSENDBREAK
|
|
|
|
int
|
|
|
|
tcsendbreak(int fd, int duration)
|
|
|
|
{
|
|
|
|
# if defined(TIOCSBRK) && defined(TIOCCBRK)
|
|
|
|
struct timeval sleepytime;
|
|
|
|
|
|
|
|
sleepytime.tv_sec = 0;
|
|
|
|
sleepytime.tv_usec = 400000;
|
|
|
|
if (ioctl(fd, TIOCSBRK, 0) == -1)
|
|
|
|
return (-1);
|
|
|
|
(void)select(0, 0, 0, 0, &sleepytime);
|
|
|
|
if (ioctl(fd, TIOCCBRK, 0) == -1)
|
|
|
|
return (-1);
|
|
|
|
return (0);
|
|
|
|
# else
|
|
|
|
return -1;
|
|
|
|
# endif
|
|
|
|
}
|
|
|
|
#endif /* HAVE_TCSENDBREAK */
|
|
|
|
|
2005-09-03 06:59:33 +00:00
|
|
|
#ifndef HAVE_STRDUP
|
|
|
|
char *
|
|
|
|
strdup(const char *str)
|
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
char *cp;
|
|
|
|
|
|
|
|
len = strlen(str) + 1;
|
|
|
|
cp = malloc(len);
|
|
|
|
if (cp != NULL)
|
2006-03-22 19:46:12 +00:00
|
|
|
return(memcpy(cp, str, len));
|
|
|
|
return NULL;
|
2005-09-03 06:59:33 +00:00
|
|
|
}
|
|
|
|
#endif
|
2011-02-17 11:47:40 +00:00
|
|
|
|
|
|
|
#ifndef HAVE_ISBLANK
|
2013-03-22 11:19:48 +00:00
|
|
|
int
|
|
|
|
isblank(int c)
|
2011-02-17 11:47:40 +00:00
|
|
|
{
|
|
|
|
return (c == ' ' || c == '\t');
|
|
|
|
}
|
|
|
|
#endif
|
2013-03-22 11:19:48 +00:00
|
|
|
|
|
|
|
#ifndef HAVE_GETPGID
|
|
|
|
pid_t
|
|
|
|
getpgid(pid_t pid)
|
|
|
|
{
|
2018-05-06 12:27:04 +00:00
|
|
|
#if defined(HAVE_GETPGRP) && !defined(GETPGRP_VOID) && GETPGRP_VOID == 0
|
2013-03-22 11:19:48 +00:00
|
|
|
return getpgrp(pid);
|
|
|
|
#elif defined(HAVE_GETPGRP)
|
|
|
|
if (pid == 0)
|
|
|
|
return getpgrp();
|
|
|
|
#endif
|
|
|
|
|
|
|
|
errno = ESRCH;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
#endif
|
2016-03-10 20:10:25 +00:00
|
|
|
|
|
|
|
#ifndef HAVE_PLEDGE
|
|
|
|
int
|
|
|
|
pledge(const char *promises, const char *paths[])
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
2017-01-31 12:29:48 +00:00
|
|
|
|
|
|
|
#ifndef HAVE_MBTOWC
|
|
|
|
/* a mbtowc that only supports ASCII */
|
|
|
|
int
|
|
|
|
mbtowc(wchar_t *pwc, const char *s, size_t n)
|
|
|
|
{
|
|
|
|
if (s == NULL || *s == '\0')
|
|
|
|
return 0; /* ASCII is not state-dependent */
|
|
|
|
if (*s < 0 || *s > 0x7f || n < 1) {
|
|
|
|
errno = EOPNOTSUPP;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (pwc != NULL)
|
|
|
|
*pwc = *s;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
#endif
|
2017-08-03 10:10:20 +00:00
|
|
|
|
|
|
|
#ifndef HAVE_LLABS
|
|
|
|
long long
|
|
|
|
llabs(long long j)
|
|
|
|
{
|
|
|
|
return (j < 0 ? -j : j);
|
|
|
|
}
|
|
|
|
#endif
|
2018-05-06 12:27:04 +00:00
|
|
|
|
|
|
|
#ifndef HAVE_BZERO
|
|
|
|
void
|
|
|
|
bzero(void *b, size_t n)
|
|
|
|
{
|
|
|
|
(void)memset(b, 0, n);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef HAVE_RAISE
|
|
|
|
int
|
|
|
|
raise(int sig)
|
|
|
|
{
|
|
|
|
kill(getpid(), sig);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef HAVE_GETSID
|
|
|
|
pid_t
|
|
|
|
getsid(pid_t pid)
|
|
|
|
{
|
|
|
|
errno = ENOSYS;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2022-04-08 17:19:17 +00:00
|
|
|
#ifndef HAVE_KILLPG
|
|
|
|
int
|
|
|
|
killpg(pid_t pgrp, int sig)
|
|
|
|
{
|
|
|
|
return kill(pgrp, sig);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2018-05-06 12:27:04 +00:00
|
|
|
#ifdef FFLUSH_NULL_BUG
|
|
|
|
#undef fflush
|
|
|
|
int _ssh_compat_fflush(FILE *f)
|
|
|
|
{
|
2019-02-05 15:03:53 +00:00
|
|
|
int r1, r2;
|
2018-05-06 12:27:04 +00:00
|
|
|
|
|
|
|
if (f == NULL) {
|
2019-02-05 15:03:53 +00:00
|
|
|
r1 = fflush(stdout);
|
|
|
|
r2 = fflush(stderr);
|
|
|
|
if (r1 == -1 || r2 == -1)
|
2018-05-06 12:27:04 +00:00
|
|
|
return -1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
return fflush(f);
|
|
|
|
}
|
|
|
|
#endif
|
2021-02-14 21:04:52 +00:00
|
|
|
|
|
|
|
#ifndef HAVE_LOCALTIME_R
|
|
|
|
struct tm *
|
|
|
|
localtime_r(const time_t *timep, struct tm *result)
|
|
|
|
{
|
|
|
|
struct tm *tm = localtime(timep);
|
|
|
|
*result = *tm;
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
#endif
|
2022-10-04 15:10:40 +00:00
|
|
|
|
|
|
|
#ifdef ASAN_OPTIONS
|
|
|
|
const char *__asan_default_options(void) {
|
|
|
|
return ASAN_OPTIONS;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef MSAN_OPTIONS
|
|
|
|
const char *__msan_default_options(void) {
|
|
|
|
return MSAN_OPTIONS;
|
|
|
|
}
|
|
|
|
#endif
|