#ifndef lint
#if 0
static char sccsid[] = "@(#)utils.c 8.3 (Berkeley) 4/1/94";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/bin/cp/utils.c,v 1.46 2005/09/05 04:36:08 csjp Exp $");
#include <sys/types.h>
#include <sys/acl.h>
#include <sys/param.h>
#include <sys/stat.h>
#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
#include <sys/mman.h>
#endif
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fts.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <unistd.h>
#ifdef __APPLE__
#include <sys/time.h>
#include <copyfile.h>
#include <string.h>
#include <sys/mount.h>
#include <get_compat.h>
#else
#define COMPAT_MODE(a,b) (1)
#endif
#include "extern.h"
#define cp_pct(x,y) (int)(100.0 * (double)(x) / (double)(y))
int
copy_file(const FTSENT *entp, int dne)
{
static char buf[MAXBSIZE];
struct stat *fs;
int ch, checkch, from_fd, rcount, rval, to_fd;
ssize_t wcount;
size_t wresid;
off_t wtotal;
char *bufp;
#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
char *p;
#endif
mode_t mode = 0;
struct stat to_stat;
if ((from_fd = open(entp->fts_path, O_RDONLY, 0)) == -1) {
warn("%s", entp->fts_path);
return (1);
}
fs = entp->fts_statp;
if (!dne) {
#define YESNO "(y/n [n]) "
if (nflag) {
if (vflag)
printf("%s not overwritten\n", to.p_path);
(void)close(from_fd);
return (1);
} else if (iflag) {
(void)fprintf(stderr, "overwrite %s? %s",
to.p_path, YESNO);
checkch = ch = getchar();
while (ch != '\n' && ch != EOF)
ch = getchar();
if (checkch != 'y' && checkch != 'Y') {
(void)close(from_fd);
(void)fprintf(stderr, "not overwritten\n");
return (1);
}
}
if (COMPAT_MODE("bin/cp", "unix2003")) {
to_fd = open(to.p_path, O_WRONLY | O_TRUNC, 0);
if (to_fd == -1) {
if (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));
}
}
} else {
if (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));
} else
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) {
warn("%s", to.p_path);
(void)close(from_fd);
return (1);
}
rval = 0;
#ifdef __APPLE__
if (S_ISREG(fs->st_mode)) {
struct statfs sfs;
if (fstatfs(to_fd, &sfs) == 0 &&
strcmp(sfs.f_fstypename, "acfs") == 0) {
fstore_t fst;
fst.fst_flags = 0;
fst.fst_posmode = F_PEOFPOSMODE;
fst.fst_offset = 0;
fst.fst_length = fs->st_size;
(void) fcntl(to_fd, F_PREALLOCATE, &fst);
}
}
#endif
if (fstat(to_fd, &to_stat) != -1) {
mode = to_stat.st_mode;
if ((mode & (S_IRWXG|S_IRWXO))
&& fchmod(to_fd, mode & ~(S_IRWXG|S_IRWXO))) {
warn("%s: fchmod failed", to.p_path);
mode = 0;
}
} else {
warn("%s", to.p_path);
}
#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
if (S_ISREG(fs->st_mode) && fs->st_size > 0 &&
fs->st_size <= 8 * 1048576) {
if ((p = mmap(NULL, (size_t)fs->st_size, PROT_READ,
MAP_SHARED, from_fd, (off_t)0)) == MAP_FAILED) {
warn("%s", entp->fts_path);
rval = 1;
} else {
wtotal = 0;
for (bufp = p, wresid = fs->st_size; ;
bufp += wcount, wresid -= (size_t)wcount) {
wcount = write(to_fd, bufp, wresid);
wtotal += wcount;
if (info) {
info = 0;
(void)fprintf(stderr,
"%s -> %s %3d%%\n",
entp->fts_path, to.p_path,
cp_pct(wtotal, fs->st_size));
}
if (wcount >= (ssize_t)wresid || wcount <= 0)
break;
}
if (wcount != (ssize_t)wresid) {
warn("%s", to.p_path);
rval = 1;
}
if (munmap(p, fs->st_size) < 0) {
warn("%s", entp->fts_path);
rval = 1;
}
}
} else
#endif
{
wtotal = 0;
while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) {
for (bufp = buf, wresid = rcount; ;
bufp += wcount, wresid -= wcount) {
wcount = write(to_fd, bufp, wresid);
wtotal += wcount;
if (info) {
info = 0;
(void)fprintf(stderr,
"%s -> %s %3d%%\n",
entp->fts_path, to.p_path,
cp_pct(wtotal, fs->st_size));
}
if (wcount >= (ssize_t)wresid || wcount <= 0)
break;
}
if (wcount != (ssize_t)wresid) {
warn("%s", to.p_path);
rval = 1;
break;
}
}
if (rcount < 0) {
warn("%s", entp->fts_path);
rval = 1;
}
}
if (mode != 0)
if (fchmod(to_fd, mode))
warn("%s: fchmod failed", to.p_path);
#ifdef __APPLE__
if (!Xflag && S_ISREG(fs->st_mode)) {
if (fcopyfile(from_fd, to_fd, NULL, COPYFILE_XATTR) < 0)
warn("%s: could not copy extended attributes to %s", entp->fts_path, to.p_path);
}
if (pflag && setfile(fs, to_fd))
rval = 1;
if (pflag) {
if (fcopyfile(from_fd, to_fd, NULL, COPYFILE_ACL) < 0)
warn("%s: could not copy ACL to %s", entp->fts_path, to.p_path);
}
#else
if (pflag && setfile(fs, to_fd))
rval = 1;
if (pflag && preserve_fd_acls(from_fd, to_fd) != 0)
rval = 1;
#endif
(void)close(from_fd);
if (close(to_fd)) {
warn("%s", to.p_path);
rval = 1;
}
return (rval);
}
int
copy_link(const FTSENT *p, int exists)
{
int len;
char llink[PATH_MAX];
if ((len = readlink(p->fts_path, llink, sizeof(llink) - 1)) == -1) {
warn("readlink: %s", p->fts_path);
return (1);
}
llink[len] = '\0';
if (exists && unlink(to.p_path)) {
warn("unlink: %s", to.p_path);
return (1);
}
if (symlink(llink, to.p_path)) {
warn("symlink: %s", llink);
return (1);
}
#ifdef __APPLE__
if (!Xflag)
if (copyfile(p->fts_path, to.p_path, NULL, COPYFILE_XATTR | COPYFILE_NOFOLLOW_SRC) <0)
warn("%s: could not copy extended attributes to %s",
p->fts_path, to.p_path);
#endif
return (pflag ? setfile(p->fts_statp, -1) : 0);
}
int
copy_fifo(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, -1) : 0);
}
int
copy_special(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, -1) : 0);
}
int
setfile(struct stat *fs, int fd)
{
static struct timeval tv[2];
struct stat ts;
int rval, gotstat, islink, fdval;
rval = 0;
fdval = fd != -1;
islink = !fdval && S_ISLNK(fs->st_mode);
fs->st_mode &= S_ISUID | S_ISGID | S_ISVTX |
S_IRWXU | S_IRWXG | S_IRWXO;
TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec);
TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec);
#ifdef __APPLE__
if (islink ? 0 : utimes(to.p_path, tv)) {
#else
if (islink ? lutimes(to.p_path, tv) : utimes(to.p_path, tv)) {
#endif
warn("%sutimes: %s", islink ? "l" : "", to.p_path);
rval = 1;
}
if (fdval ? fstat(fd, &ts) :
(islink ? lstat(to.p_path, &ts) : stat(to.p_path, &ts)))
gotstat = 0;
else {
gotstat = 1;
ts.st_mode &= S_ISUID | S_ISGID | S_ISVTX |
S_IRWXU | S_IRWXG | S_IRWXO;
}
if (!gotstat || fs->st_uid != ts.st_uid || fs->st_gid != ts.st_gid)
if (fdval ? fchown(fd, fs->st_uid, fs->st_gid) :
(islink ? lchown(to.p_path, fs->st_uid, fs->st_gid) :
chown(to.p_path, fs->st_uid, fs->st_gid))) {
if (errno != EPERM) {
warn("%schown: %s", islink ? "l" : "", to.p_path);
rval = 1;
}
fs->st_mode &= ~(S_ISUID | S_ISGID);
}
if (!gotstat || fs->st_mode != ts.st_mode)
if (fdval ? fchmod(fd, fs->st_mode) :
(islink ? lchmod(to.p_path, fs->st_mode) :
chmod(to.p_path, fs->st_mode))) {
warn("%schmod: %s", islink ? "l" : "", to.p_path);
rval = 1;
}
if (!gotstat || fs->st_flags != ts.st_flags)
if (fdval ?
fchflags(fd, fs->st_flags) :
(islink ? lchflags(to.p_path, fs->st_flags) :
chflags(to.p_path, fs->st_flags))) {
warn("%schflags: %s", islink ? "l" : "", to.p_path);
rval = 1;
}
return (rval);
}
#ifndef __APPLE__
int
preserve_fd_acls(int source_fd, int dest_fd)
{
struct acl *aclp;
acl_t acl;
if (fpathconf(source_fd, _PC_ACL_EXTENDED) != 1 ||
fpathconf(dest_fd, _PC_ACL_EXTENDED) != 1)
return (0);
acl = acl_get_fd(source_fd);
if (acl == NULL) {
warn("failed to get acl entries while setting %s", to.p_path);
return (1);
}
aclp = &acl->ats_acl;
if (aclp->acl_cnt == 3)
return (0);
if (acl_set_fd(dest_fd, acl) < 0) {
warn("failed to set acl entries for %s", to.p_path);
return (1);
}
return (0);
}
int
preserve_dir_acls(struct stat *fs, char *source_dir, char *dest_dir)
{
acl_t (*aclgetf)(const char *, acl_type_t);
int (*aclsetf)(const char *, acl_type_t, acl_t);
struct acl *aclp;
acl_t acl;
if (pathconf(source_dir, _PC_ACL_EXTENDED) != 1 ||
pathconf(dest_dir, _PC_ACL_EXTENDED) != 1)
return (0);
if (S_ISLNK(fs->st_mode)) {
aclgetf = acl_get_link_np;
aclsetf = acl_set_link_np;
} else {
aclgetf = acl_get_file;
aclsetf = acl_set_file;
}
acl = aclgetf(source_dir, ACL_TYPE_DEFAULT);
if (acl == NULL) {
warn("failed to get default acl entries on %s",
source_dir);
return (1);
}
aclp = &acl->ats_acl;
if (aclp->acl_cnt != 0 && aclsetf(dest_dir,
ACL_TYPE_DEFAULT, acl) < 0) {
warn("failed to set default acl entries on %s",
dest_dir);
return (1);
}
acl = aclgetf(source_dir, ACL_TYPE_ACCESS);
if (acl == NULL) {
warn("failed to get acl entries on %s", source_dir);
return (1);
}
aclp = &acl->ats_acl;
if (aclsetf(dest_dir, ACL_TYPE_ACCESS, acl) < 0) {
warn("failed to set acl entries on %s", dest_dir);
return (1);
}
return (0);
}
#endif
void
usage(void)
{
if (COMPAT_MODE("bin/cp", "unix2003")) {
(void)fprintf(stderr, "%s\n%s\n",
"usage: cp [-R [-H | -L | -P]] [-fi | -n] [-pvX] source_file target_file",
" cp [-R [-H | -L | -P]] [-fi | -n] [-pvX] source_file ... "
"target_directory");
} else {
(void)fprintf(stderr, "%s\n%s\n",
"usage: cp [-R [-H | -L | -P]] [-f | -i | -n] [-pvX] source_file target_file",
" cp [-R [-H | -L | -P]] [-f | -i | -n] [-pvX] source_file ... "
"target_directory");
}
exit(EX_USAGE);
}