diff options
Diffstat (limited to 'ln.c')
| -rw-r--r-- | ln.c | 114 |
1 files changed, 81 insertions, 33 deletions
@@ -1,52 +1,100 @@ +/* + * Mini ln implementation for busybox + * + * Copyright (C) 1998 by Erik Andersen <andersee@debian.org> + * + * 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 + * + */ + #include "internal.h" #include <stdio.h> -#include <sys/stat.h> -#include <sys/param.h> +#include <dirent.h> #include <errno.h> -const char ln_usage[] = "ln [-s] [-f] original-name additional-name\n" + +static const char ln_usage[] = "ln [-s] [-f] original-name additional-name\n" "\n" "\tAdd a new name that refers to the same file as \"original-name\"\n" "\n" "\t-s:\tUse a \"symbolic\" link, instead of a \"hard\" link.\n" "\t-f:\tRemove existing destination files.\n"; -int -ln_fn(const struct FileInfo * i) + +static int symlinkFlag = FALSE; +static int removeoldFlag = FALSE; +static const char *destName; + + +extern int ln_main(int argc, char **argv) { - int status = 0; - char d[PATH_MAX]; - const char * destination = i->destination; + int status; + char newdestName[NAME_MAX]; - if ( !i->makeSymbolicLink && (i->stat.st_mode & S_IFMT) == S_IFDIR ) { - fprintf(stderr, "Please use \"ln -s\" to link directories.\n"); - return 1; - } + if (argc < 3) { + fprintf(stderr, "Usage: %s", ln_usage); + exit (FALSE); + } + argc--; + argv++; - /* - * If the destination is a directory, create a file within it. - */ - if ( is_a_directory(i->destination) ) { - destination = join_paths( - d - ,i->destination - ,&i->source[i->directoryLength]); - } + /* Parse any options */ + while (**argv == '-') { + while (*++(*argv)) + switch (**argv) { + case 's': + symlinkFlag = TRUE; + break; + case 'f': + removeoldFlag = TRUE; + break; + default: + fprintf(stderr, "Usage: %s\n", ln_usage); + exit(FALSE); + } + argc--; + argv++; + } - if ( i->force ) - status = ( unlink(destination) && errno != ENOENT ); - if ( status == 0 ) { - if ( i->makeSymbolicLink ) - status = symlink(i->source, destination); - else - status = link(i->source, destination); - } + destName = argv[argc - 1]; - if ( status != 0 ) { - name_and_error(destination); - return 1; + if ((argc > 3) && !(isDirectory(destName))) { + fprintf(stderr, "%s: not a directory\n", destName); + exit (FALSE); + } + + while (argc-- >= 2) { + strcpy(newdestName, destName); + strcat(newdestName, (*argv)+(strlen(*(++argv)))); + + if (removeoldFlag==TRUE ) { + status = ( unlink(newdestName) && errno != ENOENT ); + if ( status != 0 ) { + perror(newdestName); + exit( FALSE); + } } + if ( symlinkFlag==TRUE) + status = symlink(*argv, newdestName); else - return 0; + status = link(*argv, newdestName); + if ( status != 0 ) { + perror(newdestName); + exit( FALSE); + } + } + exit( TRUE); } |