#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)utils.c 8.3 (Berkeley) 4/1/94";
#else
__RCSID("$NetBSD: utils.c,v 1.15 1998/08/19 01:29:11 thorpej Exp $");
#endif
#endif
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fts.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
int
set_utimes(file, fs)
const char * file;
struct stat * fs;
{
static struct timeval tv[2];
TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec);
TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec);
if (utimes(file, tv)) {
warn("utimes: %s", file);
return (1);
}
return (0);
}
int
copy_file(entp, dne)
FTSENT *entp;
int dne;
{
static char buf[MAXBSIZE];
struct stat to_stat, *fs;
int ch, checkch, from_fd, rcount, rval, to_fd, wcount;
#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
char *p;
#endif
if ((from_fd = open(entp->fts_path, O_RDONLY, 0)) == -1) {
warn("%s", entp->fts_path);
return (1);
}
fs = entp->fts_statp;
if (!dne) {
if (iflag) {
(void)fprintf(stderr, "overwrite %s? ", to.p_path);
checkch = ch = getchar();
while (ch != '\n' && ch != EOF)
ch = getchar();
if (checkch != 'y' && checkch != 'Y') {
(void)close(from_fd);
return (0);
}
}
to_fd = open(to.p_path, O_WRONLY | O_TRUNC, 0);
} else
to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_CREAT,
fs->st_mode & ~(S_ISUID | S_ISGID));
if (to_fd == -1 && fflag) {
(void)unlink(to.p_path);
to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_CREAT,
fs->st_mode & ~(S_ISUID | S_ISGID));
}
if (to_fd == -1) {
warn("%s", to.p_path);
(void)close(from_fd);
return (1);;
}
rval = 0;
if (fs->st_size > 0) {
#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
if (fs->st_size <= 8 * 1048576) {
if ((p = mmap(NULL, (size_t)fs->st_size, PROT_READ,
MAP_FILE|MAP_SHARED, from_fd, (off_t)0)) == (char *)-1) {
warn("%s", entp->fts_path);
rval = 1;
} else {
if (write(to_fd, p, fs->st_size) != fs->st_size) {
warn("%s", to.p_path);
rval = 1;
}
if (munmap(p, fs->st_size) < 0) {
warn("%s", entp->fts_path);
rval = 1;
}
}
} else
#endif
{
while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) {
wcount = write(to_fd, buf, rcount);
if (rcount != wcount || wcount == -1) {
warn("%s", to.p_path);
rval = 1;
break;
}
}
if (rcount < 0) {
warn("%s", entp->fts_path);
rval = 1;
}
}
}
if (rval == 1) {
(void)close(from_fd);
(void)close(to_fd);
return (1);
}
if (pflag && setfile(fs, to_fd))
rval = 1;
#define RETAINBITS \
(S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO)
else if (fs->st_mode & (S_ISUID | S_ISGID) && fs->st_uid == myuid) {
if (fstat(to_fd, &to_stat)) {
warn("%s", to.p_path);
rval = 1;
} else if (fs->st_gid == to_stat.st_gid &&
fchmod(to_fd, fs->st_mode & RETAINBITS & ~myumask)) {
warn("%s", to.p_path);
rval = 1;
}
}
(void)close(from_fd);
if (close(to_fd)) {
warn("%s", to.p_path);
rval = 1;
}
if (pflag && set_utimes(to.p_path, fs)) {
rval = 1;
}
return (rval);
}
int
copy_link(p, exists)
FTSENT *p;
int exists;
{
int len;
char target[MAXPATHLEN];
if ((len = readlink(p->fts_path, target, sizeof(target))) == -1) {
warn("readlink: %s", p->fts_path);
return (1);
}
target[len] = '\0';
if (exists && unlink(to.p_path)) {
warn("unlink: %s", to.p_path);
return (1);
}
if (symlink(target, to.p_path)) {
warn("symlink: %s", target);
return (1);
}
return (pflag ? setfile(p->fts_statp, 0) : 0);
}
int
copy_fifo(from_stat, exists)
struct stat *from_stat;
int exists;
{
if (exists && unlink(to.p_path)) {
warn("unlink: %s", to.p_path);
return (1);
}
if (mkfifo(to.p_path, from_stat->st_mode)) {
warn("mkfifo: %s", to.p_path);
return (1);
}
return (pflag ? setfile(from_stat, 0) : 0);
}
int
copy_special(from_stat, exists)
struct stat *from_stat;
int exists;
{
if (exists && unlink(to.p_path)) {
warn("unlink: %s", to.p_path);
return (1);
}
if (mknod(to.p_path, from_stat->st_mode, from_stat->st_rdev)) {
warn("mknod: %s", to.p_path);
return (1);
}
return (pflag ? setfile(from_stat, 0) : 0);
}
int
setfile(fs, fd)
struct stat *fs;
int fd;
{
int rval, islink;
rval = 0;
islink = S_ISLNK(fs->st_mode);
fs->st_mode &= S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
if (fd ? fchown(fd, fs->st_uid, fs->st_gid) :
#ifdef __APPLE__
chown(to.p_path, fs->st_uid, fs->st_gid)) {
#else
lchown(to.p_path, fs->st_uid, fs->st_gid)) {
#endif
if (errno != EPERM) {
warn("chown: %s", to.p_path);
rval = 1;
}
fs->st_mode &= ~(S_ISUID | S_ISGID);
}
#ifdef __APPLE__
if (fd ? fchmod(fd, fs->st_mode) : chmod(to.p_path, fs->st_mode)) {
#else
if (fd ? fchmod(fd, fs->st_mode) : lchmod(to.p_path, fs->st_mode)) {
#endif
warn("chmod: %s", to.p_path);
rval = 1;
}
if (!islink) {
errno = 0;
if (fd ? fchflags(fd, fs->st_flags) :
chflags(to.p_path, fs->st_flags))
if (errno != EOPNOTSUPP || fs->st_flags != 0) {
warn("chflags: %s", to.p_path);
rval = 1;
}
}
if (fd == 0 && set_utimes(to.p_path, fs))
rval = 1;
return (rval);
}
void
usage()
{
(void)fprintf(stderr, "%s\n%s\n",
"usage: cp [-R [-H | -L | -P]] [-f | -i] [-p] src target",
" cp [-R [-H | -L | -P]] [-f | -i] [-p] src1 ... srcN directory");
exit(1);
}