/*- * Copyright (c) 1991, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint #if 0 static char sccsid[] = "@(#)utils.c 8.3 (Berkeley) 4/1/94"; #include __FBSDID("$FreeBSD: src/bin/cp/utils.c,v 1.43 2004/04/06 20:06:44 markm Exp $"); #endif #endif /* not lint */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define MSC_DO_64_BIT_IO #include "config.h" #ifndef _MSC_VER # include #endif #include #ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED # include #endif #include "err.h" #include #include #include "fts.h" #include #include #include #include #ifndef __HAIKU__ # include #endif #include #ifdef __sun__ # include "solfakes.h" #endif #ifdef __HAIKU__ # include "haikufakes.h" #endif #ifdef _MSC_VER # include "mscfakes.h" #else # include #endif #include "cp_extern.h" #include "cmp_extern.h" /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ #define cp_pct(x,y) (int)(100.0 * (double)(x) / (double)(y)) #ifndef MAXBSIZE # define MAXBSIZE 0x10000 #endif #ifndef O_BINARY # define O_BINARY 0 #endif #ifndef S_ISVTX # define S_ISVTX 0 #endif int copy_file(CPUTILSINSTANCE *pThis, const FTSENT *entp, int dne, int changed_only, int *pcopied) { /*static*/ char buf[MAXBSIZE]; struct stat *fs; int ch, checkch, from_fd, rcount, rval, to_fd; ssize_t wcount; size_t wresid; size_t wtotal; char *bufp; #ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED char *p; #endif *pcopied = 0; if ((from_fd = open(entp->fts_path, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) == -1) { warn(pThis->pCtx, "open: %s", entp->fts_path); return (1); } fs = entp->fts_statp; /* * If the file exists and we're interactive, verify with the user. * If the file DNE, set the mode to be the from file, minus setuid * bits, modified by the umask; arguably wrong, but it makes copying * executables work right and it's been that way forever. (The * other choice is 666 or'ed with the execute bits on the from file * modified by the umask.) */ if (!dne) { /* compare the files first if requested */ if (changed_only) { if (cmp_fd_and_file(pThis->pCtx, from_fd, entp->fts_path, pThis->to.p_path, 1 /* silent */, 0 /* lflag */, 0 /* special */) == OK_EXIT) { close(from_fd); return (0); } if (lseek(from_fd, 0, SEEK_SET) != 0) { close(from_fd); if ((from_fd = open(entp->fts_path, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0)) == -1) { warn(pThis->pCtx, "open: %s", entp->fts_path); return (1); } } } #define YESNO "(y/n [n]) " if (pThis->nflag) { if (pThis->vflag) kmk_builtin_ctx_printf(pThis->pCtx, 0, "%s not overwritten\n", pThis->to.p_path); return (0); } else if (pThis->iflag) { (void)fprintf(stderr, "overwrite %s? %s", pThis->to.p_path, YESNO); checkch = ch = getchar(); while (ch != '\n' && ch != EOF) ch = getchar(); if (checkch != 'y' && checkch != 'Y') { (void)close(from_fd); kmk_builtin_ctx_printf(pThis->pCtx, 1, "not overwritten\n"); return (1); } } if (pThis->fflag) { /* remove existing destination file name, * create a new file */ (void)unlink(pThis->to.p_path); to_fd = open(pThis->to.p_path, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY | KMK_OPEN_NO_INHERIT, fs->st_mode & ~(S_ISUID | S_ISGID)); } else /* overwrite existing destination file name */ to_fd = open(pThis->to.p_path, O_WRONLY | O_TRUNC | O_BINARY | KMK_OPEN_NO_INHERIT, 0); } else to_fd = open(pThis->to.p_path, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY | KMK_OPEN_NO_INHERIT, fs->st_mode & ~(S_ISUID | S_ISGID)); if (to_fd == -1) { warn(pThis->pCtx, "open: %s", pThis->to.p_path); (void)close(from_fd); return (1); } rval = 0; *pcopied = 1; /* * Mmap and write if less than 8M (the limit is so we don't totally * trash memory on big files. This is really a minor hack, but it * wins some CPU back. */ #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(pThis->pCtx, "mmap: %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 defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE) if (g_cp_info) { g_cp_info = 0; kmk_builtin_ctx_printf(pThis->pCtx, 1, "%s -> %s %3d%%\n", entp->fts_path, pThis->to.p_path, cp_pct(wtotal, fs->st_size)); } #endif if (wcount >= (ssize_t)wresid || wcount <= 0) break; } if (wcount != (ssize_t)wresid) { warn(pThis->pCtx, "write[%zd != %zu]: %s", wcount, wresid, pThis->to.p_path); rval = 1; } /* Some systems don't unmap on close(2). */ if (munmap(p, fs->st_size) < 0) { warn(pThis->pCtx, "munmap: %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 defined(SIGINFO) && defined(KMK_BUILTIN_STANDALONE) if (g_cp_info) { g_cp_info = 0; kmk_builtin_ctx_printf(pThis->pCtx, 1, "%s -> %s %3d%%\n", entp->fts_path, pThis->to.p_path, cp_pct(wtotal, fs->st_size)); } #endif if (wcount >= (ssize_t)wresid || wcount <= 0) break; } if (wcount != (ssize_t)wresid) { warn(pThis->pCtx, "write[%zd != %zu]: %s", wcount, wresid, pThis->to.p_path); rval = 1; break; } } if (rcount < 0) { warn(pThis->pCtx, "read: %s", entp->fts_path); rval = 1; } } /* * Don't remove the target even after an error. The target might * not be a regular file, or its attributes might be important, * or its contents might be irreplaceable. It would only be safe * to remove it if we created it and its length is 0. */ if (pThis->pflag && copy_file_attribs(pThis, fs, to_fd)) rval = 1; (void)close(from_fd); if (close(to_fd)) { warn(pThis->pCtx, "close: %s", pThis->to.p_path); rval = 1; } return (rval); } int copy_link(CPUTILSINSTANCE *pThis, const FTSENT *p, int exists) { int len; char llink[PATH_MAX]; if ((len = readlink(p->fts_path, llink, sizeof(llink) - 1)) == -1) { warn(pThis->pCtx, "readlink: %s", p->fts_path); return (1); } llink[len] = '\0'; if (exists && unlink(pThis->to.p_path)) { warn(pThis->pCtx, "unlink: %s", pThis->to.p_path); return (1); } if (symlink(llink, pThis->to.p_path)) { warn(pThis->pCtx, "symlink: %s", llink); return (1); } return (pThis->pflag ? copy_file_attribs(pThis, p->fts_statp, -1) : 0); } int copy_fifo(CPUTILSINSTANCE *pThis, struct stat *from_stat, int exists) { if (exists && unlink(pThis->to.p_path)) { warn(pThis->pCtx, "unlink: %s", pThis->to.p_path); return (1); } if (mkfifo(pThis->to.p_path, from_stat->st_mode)) { warn(pThis->pCtx, "mkfifo: %s", pThis->to.p_path); return (1); } return (pThis->pflag ? copy_file_attribs(pThis, from_stat, -1) : 0); } int copy_special(CPUTILSINSTANCE *pThis, struct stat *from_stat, int exists) { if (exists && unlink(pThis->to.p_path)) { warn(pThis->pCtx, "unlink: %s", pThis->to.p_path); return (1); } if (mknod(pThis->to.p_path, from_stat->st_mode, from_stat->st_rdev)) { warn(pThis->pCtx, "mknod: %s", pThis->to.p_path); return (1); } return (pThis->pflag ? copy_file_attribs(pThis, from_stat, -1) : 0); } int copy_file_attribs(CPUTILSINSTANCE *pThis, 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; #ifdef HAVE_ST_TIMESPEC TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec); TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec); #else tv[0].tv_sec = fs->st_atime; tv[1].tv_sec = fs->st_mtime; tv[0].tv_usec = tv[1].tv_usec = 0; #endif if (islink ? lutimes(pThis->to.p_path, tv) : utimes(pThis->to.p_path, tv)) { warn(pThis->pCtx, "%sutimes: %s", islink ? "l" : "", pThis->to.p_path); rval = 1; } if (fdval ? fstat(fd, &ts) : (islink ? lstat(pThis->to.p_path, &ts) : stat(pThis->to.p_path, &ts))) gotstat = 0; else { gotstat = 1; ts.st_mode &= S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO; } /* * Changing the ownership probably won't succeed, unless we're root * or POSIX_CHOWN_RESTRICTED is not set. Set uid/gid before setting * the mode; current BSD behavior is to remove all setuid bits on * chown. If chown fails, lose setuid/setgid bits. */ 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(pThis->to.p_path, fs->st_uid, fs->st_gid) : chown(pThis->to.p_path, fs->st_uid, fs->st_gid))) { if (errno != EPERM) { warn(pThis->pCtx, "chown: %s", pThis->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(pThis->to.p_path, fs->st_mode) : chmod(pThis->to.p_path, fs->st_mode))) { warn(pThis->pCtx, "chmod: %s", pThis->to.p_path); rval = 1; } #ifdef HAVE_ST_FLAGS if (!gotstat || fs->st_flags != ts.st_flags) if (fdval ? fchflags(fd, fs->st_flags) : (islink ? (errno = ENOSYS) : chflags(pThis->to.p_path, fs->st_flags))) { warn(pThis->pCtx, "chflags: %s", pThis->to.p_path); rval = 1; } #endif return (rval); }