185 lines
3.9 KiB
C
185 lines
3.9 KiB
C
/* rm - remove files and directories with -r */
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/* See Makefile for compilation details. */
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/*
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Copyright (C) 2016 Free Software Foundation, Inc.
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This file is part of GNU Bash.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <errno.h>
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#include <dirent.h>
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#include "builtins.h"
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#include "shell.h"
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#include "common.h"
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#include "bashgetopt.h"
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#if !defined (errno)
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extern int errno;
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#endif
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static int rm_file(const char *fname);
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static int force, recursive;
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static int
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_remove_directory(const char *dirname)
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{
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DIR *dir;
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struct dirent *dp;
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size_t dirlen;
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int err;
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dirlen = strlen (dirname);
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err = 0;
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if ((dir = opendir(dirname)))
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{
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while ((dp = readdir(dir)))
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{
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#ifdef __GNUC__
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char fname[dirlen + 1 + strlen (dp->d_name) + 1];
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#else
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char *fname;
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int fnsize;
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#endif
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QUIT;
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if (*dp->d_name == '.' && (dp->d_name[1] == 0 || (dp->d_name[1] == '.' && dp->d_name[2] == 0)))
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continue;
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#ifdef __GNUC__
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snprintf(fname, sizeof (fname), "%s/%s", dirname, dp->d_name);
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#else
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fnsize = dirlen + 1 + strlen (dp->d_name) + 1;
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fname = xmalloc (fnsize);
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snprintf(fname, fnsize, "%s/%s", dirname, dp->d_name);
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#endif
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if (rm_file (fname) && force == 0)
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err = 1;
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#ifndef __GNUC__
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free (fname);
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#endif
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QUIT;
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}
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closedir(dir);
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if (err == 0 && rmdir (dirname) && force == 0)
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err = 1;
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}
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else if (force == 0)
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err = 1;
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if (err)
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builtin_error ("%s: %s", dirname, strerror (errno));
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return err;
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}
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static int
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rm_file(const char *fname)
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{
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if (unlink (fname) == 0)
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return 0;
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QUIT;
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/* If FNAME is a directory glibc returns EISDIR but correct POSIX value
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would be EPERM. If we get that error and FNAME is a directory and -r
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was supplied, recursively remove the directory and its contents */
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if ((errno == EISDIR || errno == EPERM) && recursive && file_isdir (fname))
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return _remove_directory(fname);
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else if (force)
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return 0;
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builtin_error ("%s: %s", fname, strerror (errno));
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return 1;
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}
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int
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rm_builtin (list)
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WORD_LIST *list;
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{
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const char *name;
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WORD_LIST *l;
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int rval, opt;
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recursive = force = 0;
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rval = EXECUTION_SUCCESS;
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reset_internal_getopt ();
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while ((opt = internal_getopt (list, "Rrfi")) != -1)
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{
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switch (opt)
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{
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case 'R':
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case 'r':
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recursive = 1;
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break;
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case 'f':
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force = 1;
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break;
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case 'i':
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return (EX_DISKFALLBACK);
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CASE_HELPOPT;
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default:
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builtin_usage ();
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return (EX_USAGE);
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}
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}
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list = loptend;
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if (list == 0)
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{
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if (force == 0)
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{
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builtin_usage ();
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return (EXECUTION_FAILURE);
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}
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return (EXECUTION_SUCCESS);
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}
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for (l = list; l; l = l->next)
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{
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QUIT;
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if (rm_file(l->word->word) && force == 0)
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rval = EXECUTION_FAILURE;
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}
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return rval;
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}
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char *rm_doc[] = {
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"Remove files.",
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"",
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"rm removes the files specified as arguments.",
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(char *)NULL
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};
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/* The standard structure describing a builtin command. bash keeps an array
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of these structures. */
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struct builtin rm_struct = {
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"rm", /* builtin name */
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rm_builtin, /* function implementing the builtin */
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BUILTIN_ENABLED, /* initial flags for builtin */
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rm_doc, /* array of long documentation strings. */
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"rm [-rf] file ...", /* usage synopsis; becomes short_doc */
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0 /* reserved for internal use */
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};
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