mirror of
https://https.git.savannah.gnu.org/git/findutils.git
synced 2026-01-26 15:39:06 +00:00
e551cfec0f
Add definition like in coreutils, thus also silencing GCC on NetBSD 7.1: warning: "textdomain" redefined * lib/system.h: Include <locale.h> and gnulib's "gettext.h" here, and define the macros textdomain, bindtextdomain, _ and N_. * find/exe.c: Use it. * find/fstype.c: Likewise. * find/ftsfind.c: Likewise. * find/oldfind.c: Likewise. * find/parser.c: Likewise. * find/pred.c: Likewise. * find/print.c: Likewise. * find/tree.c: Likewise. * find/util.c: Likewise. * lib/bugreports.c: Likewise. * lib/buildcmd.c: Likewise. * lib/dircallback.c: Likewise. * lib/fdleak.c: Likewise. * lib/findutils-version.c: Likewise. * lib/listfile.c: Likewise. * lib/regextype.c: Likewise. * lib/safe-atoi.c: Likewise. * locate/frcode.c: Likewise. * locate/locate.c: Likewise. * locate/word_io.c: Likewise. * xargs/xargs.c: Likewise. * cfg.mk (exclude_file_name_regexp--sc_bindtextdomain): Add exemption for some non-main sources to pass the syntax-check.
533 lines
15 KiB
C
533 lines
15 KiB
C
/* listfile.c -- display a long listing of a file
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Copyright (C) 1991-2018 Free Software Foundation, Inc.
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This program 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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This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/* config.h must be included first. */
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#include <config.h>
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/* system headers. */
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#include <alloca.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h> /* for readlink() */
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/* gnulib headers. */
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#include "areadlink.h"
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#include "error.h"
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#include "filemode.h"
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#include "human.h"
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#include "mbswidth.h"
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#include "idcache.h"
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#include "pathmax.h"
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#include "stat-size.h"
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/* find headers. */
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#include "system.h"
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#include "die.h"
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#include "listfile.h"
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/* Since major is a function on SVR4, we can't use `ifndef major'. */
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#ifdef MAJOR_IN_MKDEV
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#include <sys/mkdev.h>
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#else
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# ifdef MAJOR_IN_SYSMACROS
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# include <sys/sysmacros.h>
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# else
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# ifndef major /* Might be defined in sys/types.h. */
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# define major(dev) (((dev) >> 8) & 0xff)
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# define minor(dev) ((dev) & 0xff)
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# endif
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# endif
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#endif
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static bool print_name (register const char *p, FILE *stream, int literal_control_chars);
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/* We have some minimum field sizes, though we try to widen these fields on systems
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* where we discover examples where the field width we started with is not enough. */
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static int inode_number_width = 9;
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static int block_size_width = 6;
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static int nlink_width = 3;
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static int owner_width = 8;
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static int group_width = 8;
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/* We don't print st_author even if the system has it. */
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static int major_device_number_width = 3;
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static int minor_device_number_width = 3;
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static int file_size_width = 8;
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static bool print_num(FILE *stream, unsigned long num, int *width)
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{
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const int chars_out = fprintf (stream, "%*lu", *width, num);
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if (chars_out >= 0)
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{
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if (*width < chars_out)
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*width = chars_out;
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return true;
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}
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return false;
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}
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/* NAME is the name to print.
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RELNAME is the path to access it from the current directory.
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STATP is the results of stat or lstat on it.
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Use CURRENT_TIME to decide whether to print yyyy or hh:mm.
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Use OUTPUT_BLOCK_SIZE to determine how to print file block counts
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and sizes.
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STREAM is the stdio stream to print on. */
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void
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list_file (const char *name,
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int dir_fd,
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const char *relname,
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const struct stat *statp,
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time_t current_time,
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int output_block_size,
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int literal_control_chars,
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FILE *stream)
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{
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char modebuf[12];
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struct tm const *when_local;
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char const *user_name;
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char const *group_name;
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char hbuf[LONGEST_HUMAN_READABLE + 1];
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bool output_good = true;
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int chars_out;
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int failed_at = 000;
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#if HAVE_ST_DM_MODE
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/* Cray DMF: look at the file's migrated, not real, status */
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strmode (statp->st_dm_mode, modebuf);
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#else
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strmode (statp->st_mode, modebuf);
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#endif
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chars_out = fprintf (stream, "%*s", inode_number_width,
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human_readable ((uintmax_t) statp->st_ino, hbuf,
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human_ceiling,
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1u, 1u));
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if (chars_out < 0)
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{
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output_good = false;
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failed_at = 100;
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}
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else if (chars_out > inode_number_width)
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{
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inode_number_width = chars_out;
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}
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if (output_good)
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{
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if (EOF == putc(' ', stream))
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{
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output_good = false;
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failed_at = 150;
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}
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chars_out = fprintf (stream, "%*s",
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block_size_width,
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human_readable ((uintmax_t) ST_NBLOCKS (*statp), hbuf,
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human_ceiling,
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ST_NBLOCKSIZE, output_block_size));
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if (chars_out < 0)
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{
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output_good = false;
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failed_at = 200;
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}
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else
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{
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if (chars_out > block_size_width)
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block_size_width = chars_out;
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}
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}
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if (output_good)
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{
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if (EOF == putc(' ', stream))
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{
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output_good = false;
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failed_at = 250;
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}
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}
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if (output_good)
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{
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/* modebuf includes the space between the mode and the number of links,
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as the POSIX "optional alternate access method flag". */
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if (fputs (modebuf, stream) < 0)
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{
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output_good = false;
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failed_at = 275;
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}
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}
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if (output_good)
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{
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/* This format used to end in a space, but the output of "ls"
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has only one space between the link count and the owner name,
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so we removed the trailing space. Happily this also makes it
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easier to update nlink_width. */
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chars_out = fprintf (stream, "%*lu",
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nlink_width, (unsigned long) statp->st_nlink);
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if (chars_out < 0)
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{
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output_good = false;
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failed_at = 300;
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}
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else
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{
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if (chars_out > nlink_width)
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nlink_width = chars_out;
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}
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}
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if (output_good)
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{
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if (EOF == putc(' ', stream))
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{
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output_good = false;
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failed_at = 250;
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}
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user_name = getuser (statp->st_uid);
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if (user_name)
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{
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int len = mbswidth (user_name, 0);
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if (len > owner_width)
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owner_width = len;
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output_good = (fprintf (stream, "%-*s ", owner_width, user_name) >= 0);
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if (!output_good)
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failed_at = 400;
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}
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else
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{
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chars_out = fprintf (stream, "%-8lu ", (unsigned long) statp->st_uid);
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if (chars_out > owner_width)
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owner_width = chars_out;
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output_good = (chars_out > 0);
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if (!output_good)
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failed_at = 450;
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}
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}
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if (output_good)
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{
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group_name = getgroup (statp->st_gid);
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if (group_name)
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{
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int len = mbswidth (group_name, 0);
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if (len > group_width)
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group_width = len;
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output_good = (fprintf (stream, "%-*s ", group_width, group_name) >= 0);
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if (!output_good)
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failed_at = 500;
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}
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else
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{
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chars_out = fprintf (stream, "%-*lu",
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group_width, (unsigned long) statp->st_gid);
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if (chars_out > group_width)
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group_width = chars_out;
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output_good = (chars_out >= 0);
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if (output_good)
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{
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if (EOF == putc(' ', stream))
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{
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output_good = false;
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failed_at = 525;
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}
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}
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else
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{
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if (!output_good)
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failed_at = 550;
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}
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}
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}
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if (output_good)
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{
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if (S_ISCHR (statp->st_mode) || S_ISBLK (statp->st_mode))
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{
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#ifdef HAVE_STRUCT_STAT_ST_RDEV
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if (!print_num (stream,
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(unsigned long) major (statp->st_rdev),
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&major_device_number_width))
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{
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output_good = false;
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failed_at = 600;
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}
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if (output_good)
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{
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if (fprintf (stream, ", ") < 0)
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{
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output_good = false;
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failed_at = 625;
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}
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}
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if (output_good)
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{
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if (!print_num (stream,
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(unsigned long) minor (statp->st_rdev),
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&minor_device_number_width))
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{
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output_good = false;
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failed_at = 650;
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}
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}
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#else
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if (fprintf (stream, "%*s %*s",
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major_device_number_width,
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minor_device_number_width) < 0)
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{
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output_good = false;
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failed_at = 700;
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}
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#endif
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}
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else
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{
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const int blocksize = output_block_size < 0 ? output_block_size : 1;
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chars_out = fprintf (stream, "%*s",
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file_size_width,
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human_readable ((uintmax_t) statp->st_size, hbuf,
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human_ceiling,
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1, blocksize));
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if (chars_out < 0)
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{
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output_good = false;
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failed_at = 800;
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}
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else
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{
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if (chars_out > file_size_width)
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{
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file_size_width = chars_out;
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}
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}
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}
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}
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if (output_good)
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{
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if (EOF == putc(' ', stream))
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{
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output_good = false;
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failed_at = 850;
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}
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}
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if (output_good)
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{
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if ((when_local = localtime (&statp->st_mtime)))
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{
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char init_bigbuf[256];
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char *buf = init_bigbuf;
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size_t bufsize = sizeof init_bigbuf;
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/* Use strftime rather than ctime, because the former can produce
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locale-dependent names for the month (%b).
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Output the year if the file is fairly old or in the future.
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POSIX says the cutoff is 6 months old;
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approximate this by 6*30 days.
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Allow a 1 hour slop factor for what is considered "the future",
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to allow for NFS server/client clock disagreement. */
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char const *fmt =
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((current_time - 6 * 30 * 24 * 60 * 60 <= statp->st_mtime
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&& statp->st_mtime <= current_time + 60 * 60)
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? "%b %e %H:%M"
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: "%b %e %Y");
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while (!strftime (buf, bufsize, fmt, when_local))
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buf = alloca (bufsize *= 2);
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if (fprintf (stream, "%s ", buf) < 0)
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{
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output_good = false;
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failed_at = 900;
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}
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}
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else
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{
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/* The time cannot be represented as a local time;
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print it as a huge integer number of seconds. */
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int width = 12;
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if (statp->st_mtime < 0)
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{
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char const *num = human_readable (- (uintmax_t) statp->st_mtime,
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hbuf, human_ceiling, 1, 1);
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int sign_width = width - strlen (num);
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if (fprintf (stream, "%*s%s ",
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sign_width < 0 ? 0 : sign_width, "-", num) < 0)
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{
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output_good = false;
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failed_at = 1000;
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}
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}
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else
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{
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if (fprintf (stream, "%*s ", width,
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human_readable ((uintmax_t) statp->st_mtime, hbuf,
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human_ceiling,
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1, 1)) < 0)
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{
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output_good = false;
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failed_at = 1100;
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}
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}
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}
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}
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if (output_good)
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{
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output_good = print_name (name, stream, literal_control_chars);
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if (!output_good)
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{
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failed_at = 1200;
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}
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}
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if (output_good)
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{
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if (S_ISLNK (statp->st_mode))
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{
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char *linkname = areadlinkat (dir_fd, relname);
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if (linkname)
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{
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if (fputs (" -> ", stream) < 0)
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{
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output_good = false;
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failed_at = 1300;
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}
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if (output_good)
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{
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output_good = print_name (linkname, stream, literal_control_chars);
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if (!output_good)
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{
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failed_at = 1350;
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}
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}
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}
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else
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{
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/* POSIX requires in the case of find that if we issue a
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* diagnostic we should have a nonzero status. However,
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* this function doesn't have a way of telling the caller to
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* do that. However, since this function is only used when
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* processing "-ls", we're already using an extension.
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*/
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error (0, errno, "%s", name);
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}
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free (linkname);
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}
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if (output_good)
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{
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if (EOF == putc ('\n', stream))
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{
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output_good = false;
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if (!output_good)
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{
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failed_at = 1400;
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}
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}
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}
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}
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if (!output_good)
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{
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die (EXIT_FAILURE, errno, _("Failed to write output (at stage %d)"), failed_at);
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}
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}
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static bool
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print_name_without_quoting (const char *p, FILE *stream)
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{
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return (fprintf (stream, "%s", p) >= 0);
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}
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static bool
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print_name_with_quoting (register const char *p, FILE *stream)
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{
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register unsigned char c;
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while ((c = *p++) != '\0')
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{
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int fprintf_result = -1;
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switch (c)
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{
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case '\\':
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fprintf_result = fprintf (stream, "\\\\");
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break;
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case '\n':
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fprintf_result = fprintf (stream, "\\n");
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break;
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case '\b':
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fprintf_result = fprintf (stream, "\\b");
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break;
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case '\r':
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fprintf_result = fprintf (stream, "\\r");
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break;
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case '\t':
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fprintf_result = fprintf (stream, "\\t");
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break;
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case '\f':
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fprintf_result = fprintf (stream, "\\f");
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break;
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case ' ':
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fprintf_result = fprintf (stream, "\\ ");
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break;
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case '"':
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fprintf_result = fprintf (stream, "\\\"");
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break;
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default:
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if (c > 040 && c < 0177)
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{
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if (EOF == putc (c, stream))
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return false;
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fprintf_result = 1; /* otherwise it's used uninitialized. */
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}
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else
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{
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fprintf_result = fprintf (stream, "\\%03o", (unsigned int) c);
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}
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}
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if (fprintf_result < 0)
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return false;
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}
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return true;
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}
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static bool print_name (register const char *p, FILE *stream, int literal_control_chars)
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{
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if (literal_control_chars)
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return print_name_without_quoting (p, stream);
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else
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return print_name_with_quoting (p, stream);
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}
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