/****************************************************************************
* bfs *
* Copyright (C) 2015-2017 Tavian Barnes <tavianator@tavianator.com> *
* *
* Permission to use, copy, modify, and/or distribute this software for any *
* purpose with or without fee is hereby granted. *
* *
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES *
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR *
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES *
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN *
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF *
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. *
****************************************************************************/
#include "eval.h"
#include "bftw.h"
#include "cmdline.h"
#include "color.h"
#include "dstring.h"
#include "exec.h"
#include "mtab.h"
#include "printf.h"
#include "stat.h"
#include "util.h"
#include <assert.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <grp.h>
#include <pwd.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
struct eval_state {
/** Data about the current file. */
struct BFTW *ftwbuf;
/** The parsed command line. */
const struct cmdline *cmdline;
/** The bftw() callback return value. */
enum bftw_action action;
/** The eval_cmdline() return value. */
int *ret;
/** Whether to quit immediately. */
bool *quit;
/** A bfs_stat() buffer, if necessary. */
struct bfs_stat statbuf;
/** A bfs_stat() buffer for -xtype style tests. */
struct bfs_stat xstatbuf;
};
/**
* Check if an error should be ignored.
*/
static bool eval_should_ignore(const struct eval_state *state, int error) {
return state->cmdline->ignore_races
&& is_nonexistence_error(error)
&& state->ftwbuf->depth > 0;
}
/**
* Report an error that occurs during evaluation.
*/
static void eval_error(struct eval_state *state) {
if (!eval_should_ignore(state, errno)) {
cfprintf(state->cmdline->cerr, "%{er}error: '%s': %m%{rs}\n", state->ftwbuf->path);
*state->ret = EXIT_FAILURE;
}
}
#define DEBUG_FLAG(flags, flag) \
if ((flags & flag) || flags == flag) { \
fputs(#flag, stderr); \
flags ^= flag; \
if (flags) { \
fputs(" | ", stderr); \
} \
}
/**
* Debug stat() calls.
*/
static void debug_stat(const struct eval_state *state, int at_flags, enum bfs_stat_flag flags) {
if (!(state->cmdline->debug & DEBUG_STAT)) {
return;
}
struct BFTW *ftwbuf = state->ftwbuf;
fprintf(stderr, "bfs_stat(");
if (ftwbuf->at_fd == AT_FDCWD) {
fprintf(stderr, &