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/* rm - remove files and directories with -r */
/* See Makefile for compilation details. */
/*
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of GNU Bash.
Bash 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 3 of the License, or
(at your option) any later version.
Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdio.h>
#include <errno.h>
#include <dirent.h>
#include "builtins.h"
#include "shell.h"
#include "common.h"
#include "bashgetopt.h"
#if !defined (errno)
extern int errno;
#endif
static int rm_file(const char *fname);
static int force, recursive;
static int
_remove_directory(const char *dirname)
{
DIR *dir;
struct dirent *dp;
size_t dirlen;
int err;
dirlen = strlen (dirname);
err = 0;
if ((dir = opendir(dirname)))
{
while ((dp = readdir(dir)))
{
#ifdef __GNUC__
char fname[dirlen + 1 + strlen (dp->d_name) + 1];
#else
char *fname;
int fnsize;
#endif
if (*dp->d_name == '.' && (dp->d_name[1] == 0 || (dp->d_name[1] == '.' && dp->d_name[2] == 0)))
continue;
#ifdef __GNUC__
snprintf(fname, sizeof (fname), "%s/%s", dirname, dp->d_name);
#else
fnsize = dirlen + 1 + strlen (dp->d_name) + 1;
fname = xmalloc (fnsize);
snprintf(fname, fnsize, "%s/%s", dirname, dp->d_name);
#endif
if (rm_file (fname) && force == 0)
err = 1;
#ifndef __GNUC__
free (fname);
#endif
}
closedir(dir);
if (err == 0 && rmdir (dirname) && force == 0)
err = 1;
}
else if (force == 0)
err = 1;
if (err)
builtin_error ("%s: %s", dirname, strerror (errno));
return err;
}
static int
rm_file(const char *fname)
{
if (unlink (fname) == 0)
return 0;
/* If FNAME is a directory glibc returns EISDIR but correct POSIX value
would be EPERM. If we get that error and FNAME is a directory and -r
was supplied, recursively remove the directory and its contents */
if ((errno == EISDIR || errno == EPERM) && recursive && file_isdir (fname))
return _remove_directory(fname);
else if (force)
return 0;
builtin_error ("%s: %s", fname, strerror (errno));
return 1;
}
int
rm_builtin (list)
WORD_LIST *list;
{
const char *name;
WORD_LIST *l;
int rval, opt;
recursive = force = 0;
rval = EXECUTION_SUCCESS;
reset_internal_getopt ();
while ((opt = internal_getopt (list, "Rrfi")) != -1)
{
switch (opt)
{
case 'R':
case 'r':
recursive = 1;
break;
case 'f':
force = 1;
break;
case 'i':
return (EX_DISKFALLBACK);
CASE_HELPOPT;
default:
builtin_usage ();
return (EX_USAGE);
}
}
list = loptend;
if (list == 0)
{
if (force == 0)
{
builtin_usage ();
return (EXECUTION_FAILURE);
}
return (EXECUTION_SUCCESS);
}
for (l = list; l; l = l->next)
{
if (rm_file(l->word->word) && force == 0)
rval = EXECUTION_FAILURE;
}
return rval;
}
char *rm_doc[] = {
"Remove files.",
"",
"rm removes the files specified as arguments.",
(char *)NULL
};
/* The standard structure describing a builtin command. bash keeps an array
of these structures. */
struct builtin rm_struct = {
"rm", /* builtin name */
rm_builtin, /* function implementing the builtin */
BUILTIN_ENABLED, /* initial flags for builtin */
rm_doc, /* array of long documentation strings. */
"rm [-rf] file ...", /* usage synopsis; becomes short_doc */
0 /* reserved for internal use */
};
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