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-rw-r--r--misc-utils/whereis.c650
1 files changed, 650 insertions, 0 deletions
diff --git a/misc-utils/whereis.c b/misc-utils/whereis.c
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--- /dev/null
+++ b/misc-utils/whereis.c
@@ -0,0 +1,650 @@
+/*-
+ * Copyright (c) 1980 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL>
+ * - added Native Language Support
+ * 2011-08-12 Davidlohr Bueso <dave@gnu.org>
+ * - added $PATH lookup
+ *
+ * Copyright (C) 2013 Karel Zak <kzak@redhat.com>
+ * 2013 Sami Kerola <kerolasa@iki.fi>
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+
+#include "xalloc.h"
+#include "nls.h"
+#include "c.h"
+#include "closestream.h"
+#include "canonicalize.h"
+
+#include "debug.h"
+
+static UL_DEBUG_DEFINE_MASK(whereis);
+UL_DEBUG_DEFINE_MASKNAMES(whereis) = UL_DEBUG_EMPTY_MASKNAMES;
+
+#define WHEREIS_DEBUG_INIT (1 << 1)
+#define WHEREIS_DEBUG_PATH (1 << 2)
+#define WHEREIS_DEBUG_ENV (1 << 3)
+#define WHEREIS_DEBUG_ARGV (1 << 4)
+#define WHEREIS_DEBUG_SEARCH (1 << 5)
+#define WHEREIS_DEBUG_STATIC (1 << 6)
+#define WHEREIS_DEBUG_LIST (1 << 7)
+#define WHEREIS_DEBUG_ALL 0xFFFF
+
+#define DBG(m, x) __UL_DBG(whereis, WHEREIS_DEBUG_, m, x)
+#define ON_DBG(m, x) __UL_DBG_CALL(whereis, WHEREIS_DEBUG_, m, x)
+
+#define UL_DEBUG_CURRENT_MASK UL_DEBUG_MASK(whereis)
+#include "debugobj.h"
+
+static char uflag = 0;
+
+/* supported types */
+enum {
+ BIN_DIR = (1 << 1),
+ MAN_DIR = (1 << 2),
+ SRC_DIR = (1 << 3),
+
+ ALL_DIRS = BIN_DIR | MAN_DIR | SRC_DIR
+};
+
+/* directories */
+struct wh_dirlist {
+ int type;
+ dev_t st_dev;
+ ino_t st_ino;
+ char *path;
+
+ struct wh_dirlist *next;
+};
+
+static const char *bindirs[] = {
+ "/usr/bin",
+ "/usr/sbin",
+#if defined(MULTIARCHTRIPLET)
+ "/lib/" MULTIARCHTRIPLET,
+ "/usr/lib/" MULTIARCHTRIPLET,
+ "/usr/local/lib/" MULTIARCHTRIPLET,
+#endif
+ "/usr/lib",
+ "/usr/lib64",
+ "/bin",
+ "/sbin",
+ "/etc",
+ "/usr/etc",
+ "/lib",
+ "/lib64",
+ "/usr/games",
+ "/usr/games/bin",
+ "/usr/games/lib",
+ "/usr/emacs/etc",
+ "/usr/lib/emacs/*/etc",
+ "/usr/TeX/bin",
+ "/usr/tex/bin",
+ "/usr/interviews/bin/LINUX",
+
+ "/usr/X11R6/bin",
+ "/usr/X386/bin",
+ "/usr/bin/X11",
+ "/usr/X11/bin",
+ "/usr/X11R5/bin",
+
+ "/usr/local/bin",
+ "/usr/local/sbin",
+ "/usr/local/etc",
+ "/usr/local/lib",
+ "/usr/local/games",
+ "/usr/local/games/bin",
+ "/usr/local/emacs/etc",
+ "/usr/local/TeX/bin",
+ "/usr/local/tex/bin",
+ "/usr/local/bin/X11",
+
+ "/usr/contrib",
+ "/usr/hosts",
+ "/usr/include",
+
+ "/usr/g++-include",
+
+ "/usr/ucb",
+ "/usr/old",
+ "/usr/new",
+ "/usr/local",
+ "/usr/libexec",
+ "/usr/share",
+
+ "/opt/*/bin",
+ NULL
+};
+
+static const char *mandirs[] = {
+ "/usr/man/*",
+ "/usr/share/man/*",
+ "/usr/X386/man/*",
+ "/usr/X11/man/*",
+ "/usr/TeX/man/*",
+ "/usr/interviews/man/mann",
+ "/usr/share/info",
+ NULL
+};
+
+static const char *srcdirs[] = {
+ "/usr/src/*",
+ "/usr/src/lib/libc/*",
+ "/usr/src/lib/libc/net/*",
+ "/usr/src/ucb/pascal",
+ "/usr/src/ucb/pascal/utilities",
+ "/usr/src/undoc",
+ NULL
+};
+
+static void whereis_init_debug(void)
+{
+ __UL_INIT_DEBUG_FROM_ENV(whereis, WHEREIS_DEBUG_, 0, WHEREIS_DEBUG);
+}
+
+static const char *whereis_type_to_name(int type)
+{
+ switch (type) {
+ case BIN_DIR: return "bin";
+ case MAN_DIR: return "man";
+ case SRC_DIR: return "src";
+ default: return "???";
+ }
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+ FILE *out = stdout;
+
+ fputs(USAGE_HEADER, out);
+ fprintf(out, _(" %s [options] [-BMS <dir>... -f] <name>\n"), program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("Locate the binary, source, and manual-page files for a command.\n"), out);
+
+ fputs(USAGE_OPTIONS, out);
+ fputs(_(" -b search only for binaries\n"), out);
+ fputs(_(" -B <dirs> define binaries lookup path\n"), out);
+ fputs(_(" -m search only for manuals and infos\n"), out);
+ fputs(_(" -M <dirs> define man and info lookup path\n"), out);
+ fputs(_(" -s search only for sources\n"), out);
+ fputs(_(" -S <dirs> define sources lookup path\n"), out);
+ fputs(_(" -f terminate <dirs> argument list\n"), out);
+ fputs(_(" -u search for unusual entries\n"), out);
+ fputs(_(" -l output effective lookup paths\n"), out);
+
+ fputs(USAGE_SEPARATOR, out);
+ printf(USAGE_HELP_OPTIONS(16));
+ printf(USAGE_MAN_TAIL("whereis(1)"));
+ exit(EXIT_SUCCESS);
+}
+
+static void dirlist_add_dir(struct wh_dirlist **ls0, int type, const char *dir)
+{
+ struct stat st;
+ struct wh_dirlist *prev = NULL, *ls = *ls0;
+
+ if (access(dir, R_OK) != 0)
+ return;
+ if (stat(dir, &st) != 0 || !S_ISDIR(st.st_mode))
+ return;
+
+ while (ls) {
+ if (ls->st_ino == st.st_ino &&
+ ls->st_dev == st.st_dev &&
+ ls->type == type) {
+ DBG(LIST, ul_debugobj(*ls0, " ignore (already in list): %s", dir));
+ return;
+ }
+ prev = ls;
+ ls = ls->next;
+ }
+
+
+ ls = xcalloc(1, sizeof(*ls));
+ ls->st_ino = st.st_ino;
+ ls->st_dev = st.st_dev;
+ ls->type = type;
+ ls->path = canonicalize_path(dir);
+
+ if (!*ls0)
+ *ls0 = ls; /* first in the list */
+ else {
+ assert(prev);
+ prev->next = ls; /* add to the end of the list */
+ }
+
+ DBG(LIST, ul_debugobj(*ls0, " add dir: %s", ls->path));
+ return;
+}
+
+/* special case for '*' in the paths */
+static void dirlist_add_subdir(struct wh_dirlist **ls, int type, const char *dir)
+{
+ char buf[PATH_MAX], *d;
+ DIR *dirp;
+ struct dirent *dp;
+
+ strncpy(buf, dir, PATH_MAX);
+ buf[PATH_MAX - 1] = '\0';
+
+ d = strchr(buf, '*');
+ if (!d)
+ return;
+ *d = 0;
+
+ dirp = opendir(buf);
+ if (!dirp)
+ return;
+
+ DBG(LIST, ul_debugobj(*ls, " scanning subdir: %s", dir));
+
+ while ((dp = readdir(dirp)) != NULL) {
+ if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
+ continue;
+ snprintf(d, PATH_MAX - (d - buf), "%s", dp->d_name);
+ /* a dir definition can have a star in middle of path */
+ strcat(buf, strchr(dir, '*') + 1);
+ dirlist_add_dir(ls, type, buf);
+ }
+ closedir(dirp);
+ return;
+}
+
+static void construct_dirlist_from_env(const char *env,
+ struct wh_dirlist **ls,
+ int type)
+{
+ char *key = NULL, *tok = NULL, *pathcp, *path = getenv(env);
+
+ if (!path)
+ return;
+ pathcp = xstrdup(path);
+
+ DBG(ENV, ul_debugobj(*ls, "construct %s dirlist from: %s",
+ whereis_type_to_name(type), path));
+
+ for (tok = strtok_r(pathcp, ":", &key); tok;
+ tok = strtok_r(NULL, ":", &key))
+ dirlist_add_dir(ls, type, tok);
+
+ free(pathcp);
+ return;
+}
+
+static void construct_dirlist_from_argv(struct wh_dirlist **ls,
+ int *idx,
+ int argc,
+ char *argv[],
+ int type)
+{
+ int i;
+
+ DBG(ARGV, ul_debugobj(*ls, "construct %s dirlist from argv[%d..]",
+ whereis_type_to_name(type), *idx));
+
+ for (i = *idx; i < argc; i++) {
+ if (*argv[i] == '-') /* end of the list */
+ break;
+
+ DBG(ARGV, ul_debugobj(*ls, " using argv[%d]: %s", *idx, argv[*idx]));
+ dirlist_add_dir(ls, type, argv[i]);
+ *idx = i;
+ }
+
+ return;
+}
+
+static void construct_dirlist(struct wh_dirlist **ls,
+ int type,
+ const char **paths)
+{
+ size_t i;
+
+ DBG(STATIC, ul_debugobj(*ls, "construct %s dirlist from static array",
+ whereis_type_to_name(type)));
+
+ for (i = 0; paths[i]; i++) {
+ if (!strchr(paths[i], '*'))
+ dirlist_add_dir(ls, type, paths[i]);
+ else
+ dirlist_add_subdir(ls, type, paths[i]);
+ }
+ return;
+}
+
+static void free_dirlist(struct wh_dirlist **ls0, int type)
+{
+ struct wh_dirlist *prev = NULL, *next, *ls = *ls0;
+
+ *ls0 = NULL;
+
+ DBG(LIST, ul_debugobj(*ls0, "free dirlist"));
+
+ while (ls) {
+ if (ls->type & type) {
+ next = ls->next;
+ DBG(LIST, ul_debugobj(*ls0, " free: %s", ls->path));
+ free(ls->path);
+ free(ls);
+ ls = next;
+ if (prev)
+ prev->next = ls;
+ } else {
+ if (!prev)
+ *ls0 = ls; /* first unremoved */
+ prev = ls;
+ ls = ls->next;
+ }
+ }
+
+ return;
+}
+
+
+static int filename_equal(const char *cp, const char *dp)
+{
+ int i = strlen(dp);
+
+ DBG(SEARCH, ul_debug("compare '%s' and '%s'", cp, dp));
+
+ if (dp[0] == 's' && dp[1] == '.' && filename_equal(cp, dp + 2))
+ return 1;
+ if (!strcmp(dp + i - 2, ".Z"))
+ i -= 2;
+ else if (!strcmp(dp + i - 3, ".gz"))
+ i -= 3;
+ else if (!strcmp(dp + i - 3, ".xz"))
+ i -= 3;
+ else if (!strcmp(dp + i - 4, ".bz2"))
+ i -= 4;
+ while (*cp && *dp && *cp == *dp)
+ cp++, dp++, i--;
+ if (*cp == 0 && *dp == 0)
+ return 1;
+ while (isdigit(*dp))
+ dp++;
+ if (*cp == 0 && *dp++ == '.') {
+ --i;
+ while (i > 0 && *dp)
+ if (--i, *dp++ == '.')
+ return (*dp++ == 'C' && *dp++ == 0);
+ return 1;
+ }
+ return 0;
+}
+
+static void findin(const char *dir, const char *pattern, int *count, char **wait)
+{
+ DIR *dirp;
+ struct dirent *dp;
+
+ dirp = opendir(dir);
+ if (dirp == NULL)
+ return;
+
+ DBG(SEARCH, ul_debug("find '%s' in '%s'", pattern, dir));
+
+ while ((dp = readdir(dirp)) != NULL) {
+ if (!filename_equal(pattern, dp->d_name))
+ continue;
+
+ if (uflag && *count == 0)
+ xasprintf(wait, "%s/%s", dir, dp->d_name);
+
+ else if (uflag && *count == 1 && *wait) {
+ printf("%s: %s %s/%s", pattern, *wait, dir, dp->d_name);
+ free(*wait);
+ *wait = NULL;
+ } else
+ printf(" %s/%s", dir, dp->d_name);
+ ++(*count);
+ }
+ closedir(dirp);
+ return;
+}
+
+static void lookup(const char *pattern, struct wh_dirlist *ls, int want)
+{
+ char patbuf[PATH_MAX];
+ int count = 0;
+ char *wait = NULL, *p;
+
+ /* canonicalize pattern -- remove path suffix etc. */
+ p = strrchr(pattern, '/');
+ p = p ? p + 1 : (char *) pattern;
+ strncpy(patbuf, p, PATH_MAX);
+ patbuf[PATH_MAX - 1] = '\0';
+
+ DBG(SEARCH, ul_debug("lookup dirs for '%s' (%s), want: %s %s %s",
+ patbuf, pattern,
+ want & BIN_DIR ? "bin" : "",
+ want & MAN_DIR ? "man" : "",
+ want & SRC_DIR ? "src" : ""));
+ p = strrchr(patbuf, '.');
+ if (p)
+ *p = '\0';
+
+ if (!uflag)
+ /* if -u not specified then we always print the pattern */
+ printf("%s:", patbuf);
+
+ for (; ls; ls = ls->next) {
+ if ((ls->type & want) && ls->path)
+ findin(ls->path, patbuf, &count, &wait);
+ }
+
+ free(wait);
+
+ if (!uflag || count > 1)
+ putchar('\n');
+ return;
+}
+
+static void list_dirlist(struct wh_dirlist *ls)
+{
+ while (ls) {
+ if (ls->path) {
+ switch (ls->type) {
+ case BIN_DIR:
+ printf("bin: ");
+ break;
+ case MAN_DIR:
+ printf("man: ");
+ break;
+ case SRC_DIR:
+ printf("src: ");
+ break;
+ default:
+ abort();
+ }
+ printf("%s\n", ls->path);
+ }
+ ls = ls->next;
+ }
+}
+
+int main(int argc, char **argv)
+{
+ struct wh_dirlist *ls = NULL;
+ int want = ALL_DIRS;
+ int i, want_resetable = 0, opt_f_missing = 0;
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ atexit(close_stdout);
+
+ if (argc <= 1) {
+ warnx(_("not enough arguments"));
+ errtryhelp(EXIT_FAILURE);
+ } else {
+ /* first arg may be one of our standard longopts */
+ if (!strcmp(argv[1], "--help"))
+ usage();
+ if (!strcmp(argv[1], "--version")) {
+ printf(UTIL_LINUX_VERSION);
+ exit(EXIT_SUCCESS);
+ }
+ }
+
+ whereis_init_debug();
+
+ construct_dirlist(&ls, BIN_DIR, bindirs);
+ construct_dirlist_from_env("PATH", &ls, BIN_DIR);
+
+ construct_dirlist(&ls, MAN_DIR, mandirs);
+ construct_dirlist_from_env("MANPATH", &ls, MAN_DIR);
+
+ construct_dirlist(&ls, SRC_DIR, srcdirs);
+
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+ int arg_i = i;
+
+ DBG(ARGV, ul_debug("argv[%d]: %s", i, arg));
+
+ if (*arg != '-') {
+ lookup(arg, ls, want);
+ /*
+ * The lookup mask ("want") is cumulative and it's
+ * resetable only when it has been already used.
+ *
+ * whereis -b -m foo :'foo' mask=BIN|MAN
+ * whereis -b foo bar :'foo' and 'bar' mask=BIN|MAN
+ * whereis -b foo -m bar :'foo' mask=BIN; 'bar' mask=MAN
+ */
+ want_resetable = 1;
+ continue;
+ }
+
+ for (++arg; arg && *arg; arg++) {
+ DBG(ARGV, ul_debug(" arg: %s", arg));
+
+ switch (*arg) {
+ case 'f':
+ opt_f_missing = 0;
+ break;
+ case 'u':
+ uflag = 1;
+ opt_f_missing = 0;
+ break;
+ case 'B':
+ if (*(arg + 1)) {
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+ i++;
+ free_dirlist(&ls, BIN_DIR);
+ construct_dirlist_from_argv(
+ &ls, &i, argc, argv, BIN_DIR);
+ opt_f_missing = 1;
+ break;
+ case 'M':
+ if (*(arg + 1)) {
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+ i++;
+ free_dirlist(&ls, MAN_DIR);
+ construct_dirlist_from_argv(
+ &ls, &i, argc, argv, MAN_DIR);
+ opt_f_missing = 1;
+ break;
+ case 'S':
+ if (*(arg + 1)) {
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+ i++;
+ free_dirlist(&ls, SRC_DIR);
+ construct_dirlist_from_argv(
+ &ls, &i, argc, argv, SRC_DIR);
+ opt_f_missing = 1;
+ break;
+ case 'b':
+ if (want_resetable) {
+ want = ALL_DIRS;
+ want_resetable = 0;
+ }
+ want = want == ALL_DIRS ? BIN_DIR : want | BIN_DIR;
+ opt_f_missing = 0;
+ break;
+ case 'm':
+ if (want_resetable) {
+ want = ALL_DIRS;
+ want_resetable = 0;
+ }
+ want = want == ALL_DIRS ? MAN_DIR : want | MAN_DIR;
+ opt_f_missing = 0;
+ break;
+ case 's':
+ if (want_resetable) {
+ want = ALL_DIRS;
+ want_resetable = 0;
+ }
+ want = want == ALL_DIRS ? SRC_DIR : want | SRC_DIR;
+ opt_f_missing = 0;
+ break;
+ case 'l':
+ list_dirlist(ls);
+ break;
+ case 'V':
+ printf(UTIL_LINUX_VERSION);
+ return EXIT_SUCCESS;
+ case 'h':
+ usage();
+ default:
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+
+ if (arg_i < i) /* moved to the next argv[] item */
+ break;
+ }
+ }
+
+ free_dirlist(&ls, ALL_DIRS);
+ if (opt_f_missing)
+ errx(EXIT_FAILURE, _("option -f is missing"));
+ return EXIT_SUCCESS;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 09:03:49 +0000