X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Fcopy_file.c;h=2f7514628c1d26845a17703e426c2a6eb7c1bc0c;hb=f9437aaf5b92766260988e508607e193b0cfa29d;hp=1a584017f157ba02f4cee0d9e670c5b453844716;hpb=403a73a351d6275b095874cb28c7677d50aa10eb;p=oweals%2Fbusybox.git diff --git a/libbb/copy_file.c b/libbb/copy_file.c index 1a584017f..2f7514628 100644 --- a/libbb/copy_file.c +++ b/libbb/copy_file.c @@ -4,19 +4,7 @@ * * Copyright (C) 2001 by Matt Kraai * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. * */ @@ -30,35 +18,43 @@ #include #include -#include "busybox.h" +#include "libbb.h" + +/* Compiler version-specific crap that should be in a header file somewhere. */ + +#if !((__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)) +#define lchown chown +#endif + int copy_file(const char *source, const char *dest, int flags) { struct stat source_stat; struct stat dest_stat; - int dest_exists = 1; + int dest_exists = 0; int status = 0; if ((!(flags & FILEUTILS_DEREFERENCE) && lstat(source, &source_stat) < 0) || ((flags & FILEUTILS_DEREFERENCE) && stat(source, &source_stat) < 0)) { - perror_msg("%s", source); + bb_perror_msg("%s", source); return -1; } - if (stat(dest, &dest_stat) < 0) { + if (lstat(dest, &dest_stat) < 0) { if (errno != ENOENT) { - perror_msg("unable to stat `%s'", dest); + bb_perror_msg("unable to stat `%s'", dest); return -1; } - dest_exists = 0; - } - - if (dest_exists && source_stat.st_dev == dest_stat.st_dev && - source_stat.st_ino == dest_stat.st_ino) { - error_msg("`%s' and `%s' are the same file", source, dest); - return -1; + } else { + if (source_stat.st_dev == dest_stat.st_dev && + source_stat.st_ino == dest_stat.st_ino) + { + bb_error_msg("`%s' and `%s' are the same file", source, dest); + return -1; + } + dest_exists = 1; } if (S_ISDIR(source_stat.st_mode)) { @@ -67,14 +63,14 @@ int copy_file(const char *source, const char *dest, int flags) mode_t saved_umask = 0; if (!(flags & FILEUTILS_RECUR)) { - error_msg("%s: omitting directory", source); + bb_error_msg("%s: omitting directory", source); return -1; } /* Create DEST. */ if (dest_exists) { if (!S_ISDIR(dest_stat.st_mode)) { - error_msg("`%s' is not a directory", dest); + bb_error_msg("`%s' is not a directory", dest); return -1; } } else { @@ -88,7 +84,7 @@ int copy_file(const char *source, const char *dest, int flags) if (mkdir(dest, mode) < 0) { umask(saved_umask); - perror_msg("cannot create directory `%s'", dest); + bb_perror_msg("cannot create directory `%s'", dest); return -1; } @@ -96,229 +92,164 @@ int copy_file(const char *source, const char *dest, int flags) } /* Recursively copy files in SOURCE. */ - if ((dp = opendir(source)) == NULL) { - perror_msg("unable to open directory `%s'", source); + if ((dp = bb_opendir(source)) == NULL) { status = -1; - goto end; + goto preserve_status; } while ((d = readdir(dp)) != NULL) { char *new_source, *new_dest; - if (strcmp(d->d_name, ".") == 0 || - strcmp(d->d_name, "..") == 0) + new_source = concat_subpath_file(source, d->d_name); + if(new_source == NULL) continue; - - new_source = concat_path_file(source, d->d_name); new_dest = concat_path_file(dest, d->d_name); if (copy_file(new_source, new_dest, flags) < 0) status = -1; free(new_source); free(new_dest); } - - /* ??? What if an error occurs in readdir? */ - - if (closedir(dp) < 0) { - perror_msg("unable to close directory `%s'", source); - status = -1; - } + /* closedir have only EBADF error, but "dp" not changes */ + closedir(dp); if (!dest_exists && chmod(dest, source_stat.st_mode & ~saved_umask) < 0) { - perror_msg("unable to change permissions of `%s'", dest); + bb_perror_msg("unable to change permissions of `%s'", dest); status = -1; } - } else if (S_ISREG(source_stat.st_mode)) { - FILE *sfp, *dfp=NULL; + } else if (S_ISREG(source_stat.st_mode) || (flags & FILEUTILS_DEREFERENCE)) + { + int src_fd; + int dst_fd; #ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS char *link_name; if (!(flags & FILEUTILS_DEREFERENCE) && is_in_ino_dev_hashtable(&source_stat, &link_name)) { if (link(link_name, dest) < 0) { - perror_msg("unable to link `%s'", dest); + bb_perror_msg("unable to link `%s'", dest); return -1; } return 0; } + add_to_ino_dev_hashtable(&source_stat, dest); #endif - - if ((sfp = fopen(source, "r")) == NULL) { - perror_msg("unable to open `%s'", source); - return -1; + src_fd = open(source, O_RDONLY); + if (src_fd == -1) { + bb_perror_msg("unable to open `%s'", source); + return(-1); } if (dest_exists) { if (flags & FILEUTILS_INTERACTIVE) { - fprintf(stderr, "%s: overwrite `%s'? ", applet_name, dest); - if (!ask_confirmation()) { - fclose (sfp); + fprintf(stderr, "%s: overwrite `%s'? ", bb_applet_name, dest); + if (!bb_ask_confirmation()) { + close (src_fd); return 0; } } - if ((dfp = fopen(dest, "w")) == NULL) { + dst_fd = open(dest, O_WRONLY|O_TRUNC); + if (dst_fd == -1) { if (!(flags & FILEUTILS_FORCE)) { - perror_msg("unable to open `%s'", dest); - fclose (sfp); + bb_perror_msg("unable to open `%s'", dest); + close(src_fd); return -1; } if (unlink(dest) < 0) { - perror_msg("unable to remove `%s'", dest); - fclose (sfp); + bb_perror_msg("unable to remove `%s'", dest); + close(src_fd); return -1; } - dest_exists = 0; + goto dest_removed; } - } - - if (!dest_exists) { - int fd; - - if ((fd = open(dest, O_WRONLY|O_CREAT, source_stat.st_mode)) < 0 || - (dfp = fdopen(fd, "w")) == NULL) { - if (fd >= 0) - close(fd); - perror_msg("unable to open `%s'", dest); - fclose (sfp); - return -1; + } else { +dest_removed: + dst_fd = open(dest, O_WRONLY|O_CREAT, source_stat.st_mode); + if (dst_fd == -1) { + bb_perror_msg("unable to open `%s'", dest); + close(src_fd); + return(-1); } } - if (copy_file_chunk(sfp, dfp, -1) < 0) + if (bb_copyfd_eof(src_fd, dst_fd) == -1) status = -1; - if (fclose(dfp) < 0) { - perror_msg("unable to close `%s'", dest); + if (close(dst_fd) < 0) { + bb_perror_msg("unable to close `%s'", dest); status = -1; } - if (fclose(sfp) < 0) { - perror_msg("unable to close `%s'", source); + if (close(src_fd) < 0) { + bb_perror_msg("unable to close `%s'", source); status = -1; } } else if (S_ISBLK(source_stat.st_mode) || S_ISCHR(source_stat.st_mode) || - S_ISSOCK(source_stat.st_mode)) { + S_ISSOCK(source_stat.st_mode) || S_ISFIFO(source_stat.st_mode) || + S_ISLNK(source_stat.st_mode)) { if (dest_exists) { - if (flags & FILEUTILS_INTERACTIVE) { - fprintf(stderr, "%s: overwrite `%s'? ", applet_name, dest); - if (!ask_confirmation()) - return 0; - } - - if (!(flags & FILEUTILS_FORCE)) { - perror_msg("unable to remove `%s'", dest); + if((flags & FILEUTILS_FORCE) == 0) { + fprintf(stderr, "`%s' exists\n", dest); return -1; } - - if (unlink(dest) < 0) { - perror_msg("unable to remove `%s'", dest); + if(unlink(dest) < 0) { + bb_perror_msg("unable to remove `%s'", dest); return -1; } - - dest_exists = 0; - } - - if (mknod(dest, source_stat.st_mode, source_stat.st_rdev) < 0) { - perror_msg("unable to create `%s'", dest); - return -1; } - } else if (S_ISFIFO(source_stat.st_mode)) { - - if (dest_exists) { - if (flags & FILEUTILS_INTERACTIVE) { - fprintf(stderr, "%s: overwrite `%s'? ", applet_name, dest); - if (!ask_confirmation()) - return 0; - } - - if (!(flags & FILEUTILS_FORCE)) { - perror_msg("unable to remove `%s'", dest); + if (S_ISFIFO(source_stat.st_mode)) { + if (mkfifo(dest, source_stat.st_mode) < 0) { + bb_perror_msg("cannot create fifo `%s'", dest); return -1; } + } else if (S_ISLNK(source_stat.st_mode)) { + char *lpath; - if (unlink(dest) < 0) { - perror_msg("unable to remove `%s'", dest); + lpath = xreadlink(source); + if (symlink(lpath, dest) < 0) { + bb_perror_msg("cannot create symlink `%s'", dest); return -1; } + free(lpath); - dest_exists = 0; - } + if (flags & FILEUTILS_PRESERVE_STATUS) + if (lchown(dest, source_stat.st_uid, source_stat.st_gid) < 0) + bb_perror_msg("unable to preserve ownership of `%s'", dest); - if (mkfifo(dest, source_stat.st_mode) < 0) { - perror_msg("cannot create fifo `%s'", dest); - return -1; - } - } else if (S_ISLNK(source_stat.st_mode)) { - char *lpath; - - if (dest_exists) { - if (flags & FILEUTILS_INTERACTIVE) { - fprintf(stderr, "%s: overwrite `%s'? ", applet_name, dest); - if (!ask_confirmation()) - return 0; - } - - if (!(flags & FILEUTILS_FORCE)) { - perror_msg("unable to remove `%s'", dest); - return -1; - } + return 0; - if (unlink(dest) < 0) { - perror_msg("unable to remove `%s'", dest); + } else { + if (mknod(dest, source_stat.st_mode, source_stat.st_rdev) < 0) { + bb_perror_msg("unable to create `%s'", dest); return -1; } - - dest_exists = 0; - } - - lpath = xreadlink(source); - if (symlink(lpath, dest) < 0) { - perror_msg("cannot create symlink `%s'", dest); - return -1; } - free(lpath); - -#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1) - if (flags & FILEUTILS_PRESERVE_STATUS) - if (lchown(dest, source_stat.st_uid, source_stat.st_gid) < 0) - perror_msg("unable to preserve ownership of `%s'", dest); -#endif - -#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS - add_to_ino_dev_hashtable(&source_stat, dest); -#endif - - return 0; } else { - error_msg("internal error: unrecognized file type"); + bb_error_msg("internal error: unrecognized file type"); return -1; } -#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS - add_to_ino_dev_hashtable(&source_stat, dest); -#endif - -end: +preserve_status: if (flags & FILEUTILS_PRESERVE_STATUS) { struct utimbuf times; + char *msg="unable to preserve %s of `%s'"; times.actime = source_stat.st_atime; times.modtime = source_stat.st_mtime; if (utime(dest, ×) < 0) - perror_msg("unable to preserve times of `%s'", dest); + bb_perror_msg(msg, "times", dest); if (chown(dest, source_stat.st_uid, source_stat.st_gid) < 0) { source_stat.st_mode &= ~(S_ISUID | S_ISGID); - perror_msg("unable to preserve ownership of `%s'", dest); + bb_perror_msg(msg, "ownership", dest); } if (chmod(dest, source_stat.st_mode) < 0) - perror_msg("unable to preserve permissions of `%s'", dest); + bb_perror_msg(msg, "permissions", dest); } return status;