-static int fastcopy(const char *from, const char *to, struct stat *sbp)
-{
- struct timeval tval[2];
- static u_int blen;
- static char *bp;
- mode_t oldmode;
- int nread, from_fd, to_fd;
-
- if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
- SLOG("%s: %s", from, strerror(errno));
- return (1);
- }
- if (blen < sbp->st_blksize) {
- if (bp != NULL)
- free(bp);
- if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
- blen = 0;
- SLOG("malloc failed");
- return (1);
- }
- blen = sbp->st_blksize;
- }
- while ((to_fd = open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
- if (errno == EEXIST && unlink(to) == 0)
- continue;
- SLOG("%s: %s", to, strerror(errno));
- (void)close(from_fd);
- return (1);
- }
- while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
- if (write(to_fd, bp, (size_t)nread) != nread) {
- SLOG("%s: %s", to, strerror(errno));
- goto err;
- }
- if (nread < 0) {
- SLOG("%s: %s", from, strerror(errno));
- err:
- if (unlink(to))
- SLOG("%s: remove", to, strerror(errno));
- (void)close(from_fd);
- (void)close(to_fd);
- return (1);
- }
-
- oldmode = sbp->st_mode & (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID);
- if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
- SLOG("%s: set owner/group (was: %lu/%lu)", to,
- (u_long)sbp->st_uid, (u_long)sbp->st_gid, strerror(errno));
- if (oldmode & S_ISUID) {
- SLOG("%s: owner/group changed; clearing suid (mode was 0%03o)",
- to, oldmode);
- sbp->st_mode &= ~S_ISUID;
- }
- }
- if (fchmod(to_fd, sbp->st_mode))
- SLOG("%s: set mode (was: 0%03o): %s", to, oldmode, strerror(errno));
- /*
- * POSIX 1003.2c states that if _POSIX_ACL_EXTENDED is in effect
- * for dest_file, then its ACLs shall reflect the ACLs of the
- * source_file.
- */
- preserve_fd_acls(from_fd, to_fd, from, to);
- (void)close(from_fd);
-
- tval[0].tv_sec = sbp->st_atime;
- tval[1].tv_sec = sbp->st_mtime;
- tval[0].tv_usec = tval[1].tv_usec = 0;
- if (utimes(to, tval))
- SLOG("%s: set times: %s", to, strerror(errno));
-
- if (close(to_fd)) {
- SLOG("%s: %s", to, strerror(errno));
- return (1);
- }
-
- if (unlink(from)) {
- SLOG("%s: remove: %s", from, strerror(errno));
- return (1);
- }
- if (vflg)
- printf("%s -> %s\n", from, to);
- return 0;