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/* `rm' file deletion utility for GNU.
Copyright (C) 88, 90, 91, 1994-2000 Free Software Foundation, Inc.
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, 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. */
/* Written by Paul Rubin, David MacKenzie, and Richard Stallman.
Reworked to use chdir and hash tables by Jim Meyering. */
/* Implementation overview:
In the `usual' case, RM saves no state for directories it is processing.
When a removal fails (either due to an error or to an interactive `no'
reply), the failure is noted (see description of `ht' in remove.c's
remove_cwd_entries function) so that when/if the containing directory
is reopened, RM doesn't try to remove the entry again.
RM may delete arbitrarily deep hierarchies -- even ones in which file
names (from root to leaf) are longer than the system-imposed maximum.
It does this by using chdir to change to each directory in turn before
removing the entries in that directory.
RM detects directory cycles by maintaining a table of the currently
active directories. See the description of active_dir_map in remove.c.
RM is careful to avoid forming full file names whenever possible.
A full file name is formed only when it is about to be used -- e.g.
in a diagnostic or in an interactive-mode prompt.
RM minimizes the number of lstat system calls it makes. On systems
that have valid d_type data in directory entries, RM makes only one
lstat call per command line argument -- regardless of the depth of
the hierarchy. */
#include <config.h>
#include <stdio.h>
#include <getopt.h>
#include <sys/types.h>
#include <assert.h>
#include "system.h"
#include "error.h"
#include "remove.h"
#include "save-cwd.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "rm"
#define AUTHORS \
"Paul Rubin, David MacKenzie, Richard Stallman, and Jim Meyering"
void strip_trailing_slashes ();
/* Name this program was run with. */
char *program_name;
static struct option const long_opts[] =
{
{"directory", no_argument, NULL, 'd'},
{"force", no_argument, NULL, 'f'},
{"interactive", no_argument, NULL, 'i'},
{"recursive", no_argument, NULL, 'r'},
{"verbose", no_argument, NULL, 'v'},
{GETOPT_HELP_OPTION_DECL},
{GETOPT_VERSION_OPTION_DECL},
{NULL, 0, NULL, 0}
};
void
usage (int status)
{
if (status != 0)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("Usage: %s [OPTION]... FILE...\n"), program_name);
printf (_("\
Remove (unlink) the FILE(s).\n\
\n\
-d, --directory unlink directory, even if non-empty (super-user only)\n\
-f, --force ignore nonexistent files, never prompt\n\
-i, --interactive prompt before any removal\n\
-r, -R, --recursive remove the contents of directories recursively\n\
-v, --verbose explain what is being done\n\
--help display this help and exit\n\
--version output version information and exit\n\
\n\
To remove a file whose name starts with a `-', for example `-foo',\n\
use one of these commands:\n\
%s -- -foo\n\
%s ./-foo\n\
"),
program_name, program_name);
puts (_("\nReport bugs to <bug-fileutils@gnu.org>."));
}
exit (status);
}
static void
rm_option_init (struct rm_options *x)
{
x->unlink_dirs = 0;
x->ignore_missing_files = 0;
x->interactive = 0;
x->recursive = 0;
x->stdin_tty = isatty (STDIN_FILENO);
x->verbose = 0;
}
int
main (int argc, char **argv)
{
struct rm_options x;
int fail = 0;
int c;
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
rm_option_init (&x);
while ((c = getopt_long (argc, argv, "dfirvR", long_opts, NULL)) != -1)
{
switch (c)
{
case 0: /* Long option. */
break;
case 'd':
x.unlink_dirs = 1;
break;
case 'f':
x.interactive = 0;
x.ignore_missing_files = 1;
break;
case 'i':
x.interactive = 1;
x.ignore_missing_files = 0;
break;
case 'r':
case 'R':
x.recursive = 1;
break;
case 'v':
x.verbose = 1;
break;
case_GETOPT_HELP_CHAR;
case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
default:
usage (1);
}
}
if (optind == argc)
{
if (x.ignore_missing_files)
exit (0);
else
{
error (0, 0, _("too few arguments"));
usage (1);
}
}
remove_init ();
for (; optind < argc; optind++)
{
struct File_spec fs;
enum RM_status status;
/* Stripping slashes is harmless for rmdir;
if the arg is not a directory, it will fail with ENOTDIR. */
strip_trailing_slashes (argv[optind]);
fspec_init_file (&fs, argv[optind]);
status = rm (&fs, 1, &x);
assert (VALID_STATUS (status));
if (status == RM_ERROR)
fail = 1;
}
remove_fini ();
exit (fail);
}
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