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- /*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Michael Fischbein.
- *
- * 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.
- */
-
- #ifndef lint
- static char copyright[] =
- "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)ls.c 5.69 (Berkeley) 10/17/92";
- #endif /* not lint */
-
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/ioctl.h>
- #include <dirent.h>
- #include <unistd.h>
- #include <fts.h>
- #include <stdlib.h>
- #include <string.h>
- #include <errno.h>
- #include <stdio.h>
- #include "ls.h"
- #include "extern.h"
-
- char *getbsize __P((char *, int *, long *));
- char *group_from_gid __P((u_int, int));
- char *user_from_uid __P((u_int, int));
-
- static void display __P((FTSENT *, FTSENT *));
- static char *flags_from_fid __P((u_long));
- static int mastercmp __P((const FTSENT **, const FTSENT **));
- static void traverse __P((int, char **, int));
-
- static void (*printfcn) __P((DISPLAY *));
- static int (*sortfcn) __P((const FTSENT *, const FTSENT *));
-
- long blocksize; /* block size units */
- int termwidth = 80; /* default terminal width */
-
- /* flags */
- int f_accesstime; /* use time of last access */
- int f_column; /* columnated format */
- int f_flags; /* show flags associated with a file */
- int f_inode; /* print inode */
- int f_listdir; /* list actual directory, not contents */
- int f_listdot; /* list files beginning with . */
- int f_longform; /* long listing format */
- int f_newline; /* if precede with newline */
- int f_nonprint; /* show unprintables as ? */
- int f_nosort; /* don't sort output */
- int f_recursive; /* ls subdirectories also */
- int f_reversesort; /* reverse whatever sort is used */
- int f_sectime; /* print the real time for all files */
- int f_singlecol; /* use single column output */
- int f_size; /* list size in short listing */
- int f_statustime; /* use time of last mode change */
- int f_dirname; /* if precede with directory name */
- int f_timesort; /* sort by time vice name */
- int f_type; /* add type character for non-regular files */
-
- int
- main(argc, argv)
- int argc;
- char *argv[];
- {
- static char dot[] = ".", *dotav[] = { dot, NULL };
- struct winsize win;
- int ch, fts_options, notused;
- char *p;
-
- /* Terminal defaults to -Cq, non-terminal defaults to -1. */
- if (isatty(STDOUT_FILENO)) {
- if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == -1 ||
- !win.ws_col) {
- if (p = getenv("COLUMNS"))
- termwidth = atoi(p);
- }
- else
- termwidth = win.ws_col;
- f_column = f_nonprint = 1;
- } else
- f_singlecol = 1;
-
- /* Root is -A automatically. */
- if (!getuid())
- f_listdot = 1;
-
- fts_options = FTS_PHYSICAL;
- while ((ch = getopt(argc, argv, "1ACFLRTacdfgikloqrstu")) != EOF) {
- switch (ch) {
- /*
- * The -1, -C and -l options all override each other so shell
- * aliasing works right.
- */
- case '1':
- f_singlecol = 1;
- f_column = f_longform = 0;
- break;
- case 'C':
- f_column = 1;
- f_longform = f_singlecol = 0;
- break;
- case 'l':
- f_longform = 1;
- f_column = f_singlecol = 0;
- break;
- /* The -c and -u options override each other. */
- case 'c':
- f_statustime = 1;
- f_accesstime = 0;
- break;
- case 'u':
- f_accesstime = 1;
- f_statustime = 0;
- break;
- case 'F':
- f_type = 1;
- break;
- case 'L':
- fts_options &= ~FTS_PHYSICAL;
- fts_options |= FTS_LOGICAL;
- break;
- case 'R':
- f_recursive = 1;
- break;
- case 'a':
- fts_options |= FTS_SEEDOT;
- /* FALLTHROUGH */
- case 'A':
- f_listdot = 1;
- break;
- /* The -d option turns off the -R option. */
- case 'd':
- f_listdir = 1;
- f_recursive = 0;
- break;
- case 'f':
- f_nosort = 1;
- break;
- case 'g': /* Compatibility with 4.3BSD. */
- break;
- case 'i':
- f_inode = 1;
- break;
- case 'k': /* Delete before 4.4BSD. */
- (void)fprintf(stderr, "ls: -k no longer supported\n");
- break;
- case 'o':
- f_flags = 1;
- break;
- case 'q':
- f_nonprint = 1;
- break;
- case 'r':
- f_reversesort = 1;
- break;
- case 's':
- f_size = 1;
- break;
- case 'T':
- f_sectime = 1;
- break;
- case 't':
- f_timesort = 1;
- break;
- default:
- case '?':
- usage();
- }
- }
- argc -= optind;
- argv += optind;
-
- /*
- * If not -F, -i, -l, -s or -t options, don't require stat
- * information.
- */
- if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type)
- fts_options |= FTS_NOSTAT;
-
- /*
- * If not -F, -d or -l options, follow any symbolic links listed on
- * the command line.
- */
- if (!f_longform && !f_listdir && !f_type)
- fts_options |= FTS_COMFOLLOW;
-
- /* If -l or -s, figure out block size. */
- if (f_longform || f_size) {
- (void)getbsize("ls", ¬used, &blocksize);
- blocksize /= 512;
- }
-
- /* Select a sort function. */
- if (f_reversesort) {
- if (!f_timesort)
- sortfcn = revnamecmp;
- else if (f_accesstime)
- sortfcn = revacccmp;
- else if (f_statustime)
- sortfcn = revstatcmp;
- else /* Use modification time. */
- sortfcn = revmodcmp;
- } else {
- if (!f_timesort)
- sortfcn = namecmp;
- else if (f_accesstime)
- sortfcn = acccmp;
- else if (f_statustime)
- sortfcn = statcmp;
- else /* Use modification time. */
- sortfcn = modcmp;
- }
-
- /* Select a print function. */
- if (f_singlecol)
- printfcn = printscol;
- else if (f_longform)
- printfcn = printlong;
- else
- printfcn = printcol;
-
- if (argc)
- traverse(argc, argv, fts_options);
- else
- traverse(1, dotav, fts_options);
- exit(0);
- }
-
- static int output; /* If anything output. */
-
- /*
- * Traverse() walks the logical directory structure specified by the argv list
- * in the order specified by the mastercmp() comparison function. During the
- * traversal it passes linked lists of structures to display() which represent
- * a superset (may be exact set) of the files to be displayed.
- */
- static void
- traverse(argc, argv, options)
- int argc, options;
- char *argv[];
- {
- register FTS *ftsp;
- register FTSENT *p;
- int ch_options;
-
- if ((ftsp =
- fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
- err(1, "%s", strerror(errno));
-
- display(NULL, fts_children(ftsp, 0));
- if (f_listdir)
- return;
-
- /*
- * If not recursing down this tree and don't need stat info, just get
- * the names.
- */
- ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
-
- while (p = fts_read(ftsp))
- switch(p->fts_info) {
- case FTS_DC:
- err(0, "%s: directory causes a cycle", p->fts_name);
- break;
- case FTS_DNR:
- case FTS_ERR:
- err(0, "%s: %s",
- p->fts_name, strerror(p->fts_errno));
- break;
- case FTS_D:
- if (p->fts_level != FTS_ROOTLEVEL &&
- p->fts_name[0] == '.' && !f_listdot)
- break;
-
- /*
- * If already output something, put out a newline as
- * a separator. If multiple arguments, precede each
- * directory with its name.
- */
- if (output)
- (void)printf("\n%s:\n", p->fts_path);
- else if (argc > 1) {
- (void)printf("%s:\n", p->fts_path);
- output = 1;
- }
-
- display(p, fts_children(ftsp, ch_options));
-
- if (!f_recursive)
- (void)fts_set(ftsp, p, FTS_SKIP);
- break;
- }
- (void)fts_close(ftsp);
- }
-
- /*
- * Display() takes a linked list of FTSENT structures and passes the list
- * along with any other necessary information to the print function. P
- * points to the parent directory of the display list.
- */
- static void
- display(p, list)
- register FTSENT *p;
- FTSENT *list;
- {
- register FTSENT *cur;
- struct stat *sp;
- DISPLAY d;
- NAMES *np;
- u_long btotal, maxblock, maxinode, maxlen, maxnlink;
- u_quad_t maxsize;
- int bcfile, flen, glen, ulen, maxflags, maxgroup, maxuser;
- int entries, needstats;
- char *user, *group, *flags, buf[20]; /* 32 bits == 10 digits */
-
- /*
- * If list is NULL there are two possibilities: that the parent
- * directory p has no children, or that fts_children() returned an
- * error. We ignore the error case since it will be replicated
- * on the next call to fts_read() on the post-order visit to the
- * directory p, and will be signalled in traverse().
- */
- if (list == NULL)
- return;
-
- needstats = f_inode || f_longform || f_size;
- flen = 0;
- btotal = maxblock = maxinode = maxlen = maxnlink = 0;
- bcfile = 0;
- maxuser = maxgroup = maxflags = 0;
- maxsize = 0;
- for (cur = list, entries = 0; cur; cur = cur->fts_link) {
- if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
- err(0, "%s: %s",
- cur->fts_name, strerror(cur->fts_errno));
- cur->fts_number = NO_PRINT;
- continue;
- }
-
- /*
- * P is NULL if list is the argv list, to which different rules
- * apply.
- */
- if (p == NULL) {
- /* Directories will be displayed later. */
- if (cur->fts_info == FTS_D && !f_listdir) {
- cur->fts_number = NO_PRINT;
- continue;
- }
- } else {
- /* Only display dot file if -a/-A set. */
- if (cur->fts_name[0] == '.' && !f_listdot) {
- cur->fts_number = NO_PRINT;
- continue;
- }
- }
- if (f_nonprint)
- prcopy(cur->fts_name, cur->fts_name, cur->fts_namelen);
- if (cur->fts_namelen > maxlen)
- maxlen = cur->fts_namelen;
- if (needstats) {
- sp = cur->fts_statp;
- if (sp->st_blocks > maxblock)
- maxblock = sp->st_blocks;
- if (sp->st_ino > maxinode)
- maxinode = sp->st_ino;
- if (sp->st_nlink > maxnlink)
- maxnlink = sp->st_nlink;
- if (sp->st_size > maxsize)
- maxsize = sp->st_size;
-
- btotal += sp->st_blocks;
- if (f_longform) {
- user = user_from_uid(sp->st_uid, 0);
- if ((ulen = strlen(user)) > maxuser)
- maxuser = ulen;
- group = group_from_gid(sp->st_gid, 0);
- if ((glen = strlen(group)) > maxgroup)
- maxgroup = glen;
- if (f_flags) {
- flags = flags_from_fid(sp->st_flags);
- if ((flen = strlen(flags)) > maxflags)
- maxflags = flen;
- } else
- flen = 0;
-
- if ((np = malloc(sizeof(NAMES) +
- ulen + glen + flen + 3)) == NULL)
- err(1, "%s", strerror(errno));
-
- np->user = &np->data[0];
- (void)strcpy(np->user, user);
- np->group = &np->data[ulen + 1];
- (void)strcpy(np->group, group);
-
- if (S_ISCHR(sp->st_mode) ||
- S_ISBLK(sp->st_mode))
- bcfile = 1;
-
- if (f_flags) {
- np->flags = &np->data[ulen + glen + 2];
- (void)strcpy(np->flags, flags);
- }
- cur->fts_pointer = np;
- }
- }
- ++entries;
- }
-
- if (!entries)
- return;
-
- d.list = list;
- d.entries = entries;
- d.maxlen = maxlen;
- if (needstats) {
- d.bcfile = bcfile;
- d.btotal = btotal;
- (void)snprintf(buf, sizeof(buf), "%lu", maxblock);
- d.s_block = strlen(buf);
- d.s_flags = maxflags;
- d.s_group = maxgroup;
- (void)snprintf(buf, sizeof(buf), "%lu", maxinode);
- d.s_inode = strlen(buf);
- (void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
- d.s_nlink = strlen(buf);
- (void)snprintf(buf, sizeof(buf), "%qu", maxsize);
- d.s_size = strlen(buf);
- d.s_user = maxuser;
- }
-
- printfcn(&d);
- output = 1;
-
- if (f_longform)
- for (cur = list; cur; cur = cur->fts_link)
- free(cur->fts_pointer);
- }
-
- /*
- * Ordering for mastercmp:
- * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
- * as larger than directories. Within either group, use the sort function.
- * All other levels use the sort function. Error entries remain unsorted.
- */
- static int
- mastercmp(a, b)
- const FTSENT **a, **b;
- {
- register int a_info, b_info;
-
- a_info = (*a)->fts_info;
- if (a_info == FTS_ERR)
- return (0);
- b_info = (*b)->fts_info;
- if (b_info == FTS_ERR)
- return (0);
-
- if (a_info == FTS_NS || b_info == FTS_NS)
- return (namecmp(*a, *b));
-
- if (a_info == b_info)
- return (sortfcn(*a, *b));
-
- if ((*a)->fts_level == FTS_ROOTLEVEL)
- if (a_info == FTS_D)
- return (1);
- else if (b_info == FTS_D)
- return (-1);
- else
- return (sortfcn(*a, *b));
- else
- return (sortfcn(*a, *b));
- }
-
- static char *
- flags_from_fid(flags)
- u_long flags;
- {
- static char buf[20];
- register int comma;
- register char *p;
-
- p = buf;
- if (flags & ARCHIVED) {
- (void)strcpy(p, "arch");
- p += sizeof("arch") - 1;
- comma = 1;
- } else
- comma = 0;
- if (flags & NODUMP) {
- if (comma++)
- *p++ = ',';
- (void)strcpy(p, "nodump");
- p += sizeof("nodump") - 1;
- }
- if (flags & IMMUTABLE) {
- if (comma++)
- *p++ = ',';
- (void)strcpy(p, "nochg");
- p += sizeof("nochg") - 1;
- }
- if (!comma)
- (void)strcpy(p, "-");
- return (buf);
- }
-