From 5b57d28ffb6e1ef86b50f7d05d977826eae89bfe Mon Sep 17 00:00:00 2001 From: Kiyoshi Aman Date: Fri, 1 Feb 2019 22:55:37 +0000 Subject: initial population --- bin/ls/ls.c | 715 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 715 insertions(+) create mode 100644 bin/ls/ls.c (limited to 'bin/ls/ls.c') diff --git a/bin/ls/ls.c b/bin/ls/ls.c new file mode 100644 index 0000000..282207f --- /dev/null +++ b/bin/ls/ls.c @@ -0,0 +1,715 @@ +/* $NetBSD: ls.c,v 1.76 2017/02/06 21:06:04 rin Exp $ */ + +/* + * Copyright (c) 1989, 1993, 1994 + * 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. 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. + */ + +#include +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)ls.c 8.7 (Berkeley) 8/5/94"; +#else +__RCSID("$NetBSD: ls.c,v 1.76 2017/02/06 21:06:04 rin Exp $"); +#endif +#endif /* not lint */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ls.h" +#include "extern.h" + +static void display(FTSENT *, FTSENT *); +static int mastercmp(const FTSENT **, const FTSENT **); +static void traverse(int, char **, int); + +static void (*printfcn)(DISPLAY *); +static int (*sortfcn)(const FTSENT *, const FTSENT *); + +#define BY_NAME 0 +#define BY_SIZE 1 +#define BY_TIME 2 + +long blocksize; /* block size units */ +int termwidth = 80; /* default terminal width */ +int sortkey = BY_NAME; +int rval = EXIT_SUCCESS; /* exit value - set if error encountered */ + +/* flags */ +int f_accesstime; /* use time of last access */ +int f_column; /* columnated format */ +int f_columnacross; /* columnated format, sorted across */ +int f_flags; /* show flags associated with a file */ +int f_grouponly; /* long listing without owner */ +int f_humanize; /* humanize the size field */ +int f_commas; /* separate size field with comma */ +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_nonprint; /* show unprintables as ? */ +int f_nosort; /* don't sort output */ +int f_numericonly; /* don't convert uid/gid to name */ +int f_octal; /* print octal escapes for nongraphic characters */ +int f_octal_escape; /* like f_octal but use C escapes if possible */ +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_stream; /* stream format */ +int f_type; /* add type character for non-regular files */ +int f_typedir; /* add type character for directories */ +int f_whiteout; /* show whiteout entries */ +int f_fullpath; /* print full pathname, not filename */ +int f_leafonly; /* when recursing, print leaf names only */ + +__dead static void +usage(void) +{ + + (void)fprintf(stderr, + "usage: %s [-1AaBbCcdFfghikLlMmnOoPpqRrSsTtuWwXx] [file ...]\n", + getprogname()); + exit(EXIT_FAILURE); + /* NOTREACHED */ +} + +int +ls_main(int argc, char *argv[]) +{ + static char dot[] = ".", *dotav[] = { dot, NULL }; + struct winsize win; + int ch, fts_options; + int kflag = 0; + const char *p; + + setprogname(argv[0]); + (void)setlocale(LC_ALL, ""); + + /* Terminal defaults to -Cq, non-terminal defaults to -1. */ + if (isatty(STDOUT_FILENO)) { + if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == 0 && + win.ws_col > 0) + 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, "1AaBbCcdFfghikLlMmnOoPpqRrSsTtuWwXx")) + != -1) { + switch (ch) { + /* + * The -1, -C, -l, -m and -x options all override each other so + * shell aliasing works correctly. + */ + case '1': + f_singlecol = 1; + f_column = f_columnacross = f_longform = f_stream = 0; + break; + case 'C': + f_column = 1; + f_columnacross = f_longform = f_singlecol = f_stream = + 0; + break; + case 'g': + if (f_grouponly != -1) + f_grouponly = 1; + f_longform = 1; + f_column = f_columnacross = f_singlecol = f_stream = 0; + break; + case 'l': + f_longform = 1; + f_column = f_columnacross = f_singlecol = f_stream = 0; + /* Never let -g take precedence over -l. */ + f_grouponly = -1; + break; + case 'm': + f_stream = 1; + f_column = f_columnacross = f_longform = f_singlecol = + 0; + break; + case 'x': + f_columnacross = 1; + f_column = f_longform = f_singlecol = f_stream = 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 'f': + f_nosort = 1; + /* FALLTHROUGH */ + case 'a': + fts_options |= FTS_SEEDOT; + /* FALLTHROUGH */ + case 'A': + f_listdot = 1; + break; + /* The -B option turns off the -b, -q and -w options. */ + case 'B': + f_nonprint = 0; + f_octal = 1; + f_octal_escape = 0; + break; + /* The -b option turns off the -B, -q and -w options. */ + case 'b': + f_nonprint = 0; + f_octal = 0; + f_octal_escape = 1; + break; + /* The -d option turns off the -R option. */ + case 'd': + f_listdir = 1; + f_recursive = 0; + break; + case 'i': + f_inode = 1; + break; + case 'k': + blocksize = 1024; + kflag = 1; + f_humanize = 0; + break; + /* The -h option forces all sizes to be measured in bytes. */ + case 'h': + f_humanize = 1; + kflag = 0; + f_commas = 0; + break; + case 'M': + f_humanize = 0; + f_commas = 1; + break; + case 'n': + f_numericonly = 1; + f_longform = 1; + f_column = f_columnacross = f_singlecol = f_stream = 0; + break; + case 'O': + f_leafonly = 1; + break; + case 'o': + f_flags = 1; + break; + case 'P': + f_fullpath = 1; + break; + case 'p': + f_typedir = 1; + break; + /* The -q option turns off the -B, -b and -w options. */ + case 'q': + f_nonprint = 1; + f_octal = 0; + f_octal_escape = 0; + break; + case 'r': + f_reversesort = 1; + break; + case 'S': + sortkey = BY_SIZE; + break; + case 's': + f_size = 1; + break; + case 'T': + f_sectime = 1; + break; + case 't': + sortkey = BY_TIME; + break; + case 'W': + f_whiteout = 1; + break; + /* The -w option turns off the -B, -b and -q options. */ + case 'w': + f_nonprint = 0; + f_octal = 0; + f_octal_escape = 0; + break; + case 'X': + fts_options |= FTS_XDEV; + break; + default: + case '?': + usage(); + } + } + argc -= optind; + argv += optind; + + if (f_column || f_columnacross || f_stream) { + if ((p = getenv("COLUMNS")) != NULL) + termwidth = atoi(p); + } + + /* + * If both -g and -l options, let -l take precedence. + */ + if (f_grouponly == -1) + f_grouponly = 0; + + /* + * If not -F, -i, -l, -p, -S, -s or -t options, don't require stat + * information. + */ + if (!f_inode && !f_longform && !f_size && !f_type && !f_typedir && + sortkey == BY_NAME) + 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 -W, show whiteout entries + */ +#ifdef FTS_WHITEOUT + if (f_whiteout) + fts_options |= FTS_WHITEOUT; +#endif + + /* If -i, -l, or -s, figure out block size. */ + if (f_inode || f_longform || f_size) { + if (!kflag) + (void)getbsize(NULL, &blocksize); + blocksize /= 512; + } + + /* Select a sort function. */ + if (f_reversesort) { + switch (sortkey) { + case BY_NAME: + sortfcn = revnamecmp; + break; + case BY_SIZE: + sortfcn = revsizecmp; + break; + case BY_TIME: + if (f_accesstime) + sortfcn = revacccmp; + else if (f_statustime) + sortfcn = revstatcmp; + else /* Use modification time. */ + sortfcn = revmodcmp; + break; + } + } else { + switch (sortkey) { + case BY_NAME: + sortfcn = namecmp; + break; + case BY_SIZE: + sortfcn = sizecmp; + break; + case BY_TIME: + if (f_accesstime) + sortfcn = acccmp; + else if (f_statustime) + sortfcn = statcmp; + else /* Use modification time. */ + sortfcn = modcmp; + break; + } + } + + /* Select a print function. */ + if (f_singlecol) + printfcn = printscol; + else if (f_columnacross) + printfcn = printacol; + else if (f_longform) + printfcn = printlong; + else if (f_stream) + printfcn = printstream; + else + printfcn = printcol; + + if (argc) + traverse(argc, argv, fts_options); + else + traverse(1, dotav, fts_options); + return rval; + /* NOTREACHED */ +} + +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(int argc, char *argv[], int options) +{ + FTS *ftsp; + FTSENT *p, *chp; + int ch_options, error; + + if ((ftsp = + fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL) + err(EXIT_FAILURE, NULL); + + display(NULL, fts_children(ftsp, 0)); + if (f_listdir) { + (void)fts_close(ftsp); + 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)) != NULL) + switch (p->fts_info) { + case FTS_DC: + warnx("%s: directory causes a cycle", p->fts_name); + break; + case FTS_DNR: + case FTS_ERR: + warnx("%s: %s", p->fts_name, strerror(p->fts_errno)); + rval = EXIT_FAILURE; + 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 (!f_leafonly) { + if (output) + (void)printf("\n%s:\n", p->fts_path); + else if (argc > 1) { + (void)printf("%s:\n", p->fts_path); + output = 1; + } + } + + chp = fts_children(ftsp, ch_options); + display(p, chp); + + if (!f_recursive && chp != NULL) + (void)fts_set(ftsp, p, FTS_SKIP); + break; + } + error = errno; + (void)fts_close(ftsp); + errno = error; + if (errno) + err(EXIT_FAILURE, "fts_read"); +} + +/* + * 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(FTSENT *p, FTSENT *list) +{ + struct stat *sp; + DISPLAY d; + FTSENT *cur; + NAMES *np; + u_int64_t btotal, stotal; + off_t maxsize; + blkcnt_t maxblock; + ino_t maxinode; + int maxmajor, maxminor; + uint32_t maxnlink; + int bcfile, entries, flen, glen, ulen, maxflags, maxgroup; + unsigned int maxlen; + int maxuser, needstats; + const char *user, *group; + char buf[21]; /* 64 bits == 20 digits, +1 for NUL */ + char nuser[12], ngroup[12]; + char *flags = NULL; + + /* + * 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; + maxinode = maxnlink = 0; + bcfile = 0; + maxuser = maxgroup = maxflags = maxlen = 0; + btotal = stotal = maxblock = maxsize = 0; + maxmajor = maxminor = 0; + for (cur = list, entries = 0; cur; cur = cur->fts_link) { + if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) { + warnx("%s: %s", + cur->fts_name, strerror(cur->fts_errno)); + cur->fts_number = NO_PRINT; + rval = EXIT_FAILURE; + 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 (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; + if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) { + bcfile = 1; + if (major(sp->st_rdev) > maxmajor) + maxmajor = major(sp->st_rdev); + if (minor(sp->st_rdev) > maxminor) + maxminor = minor(sp->st_rdev); + } + + btotal += sp->st_blocks; + stotal += sp->st_size; + if (f_longform) { + if (f_numericonly || + (user = user_from_uid(sp->st_uid, 0)) == + NULL) { + (void)snprintf(nuser, sizeof(nuser), + "%u", sp->st_uid); + user = nuser; + } + if (f_numericonly || + (group = group_from_gid(sp->st_gid, 0)) == + NULL) { + (void)snprintf(ngroup, sizeof(ngroup), + "%u", sp->st_gid); + group = ngroup; + } + if ((ulen = strlen(user)) > maxuser) + maxuser = ulen; + if ((glen = strlen(group)) > maxgroup) + maxgroup = glen; + if (f_flags) { + flags = + flags_to_string((u_long)sp->st_flags, "-"); + if ((flen = strlen(flags)) > maxflags) + maxflags = flen; + } else + flen = 0; + + if ((np = malloc(sizeof(NAMES) + + ulen + glen + flen + 2)) == NULL) + err(EXIT_FAILURE, NULL); + + np->user = &np->data[0]; + (void)strcpy(np->user, user); + np->group = &np->data[ulen + 1]; + (void)strcpy(np->group, group); + + if (f_flags) { + np->flags = &np->data[ulen + glen + 2]; + (void)strcpy(np->flags, flags); + free(flags); + } + cur->fts_pointer = np; + } + } + ++entries; + } + + if (!entries) + return; + + d.list = list; + d.entries = entries; + d.maxlen = maxlen; + if (needstats) { + d.btotal = btotal; + d.stotal = stotal; + if (f_humanize) { + d.s_block = 4; /* min buf length for humanize_number */ + } else { + (void)snprintf(buf, sizeof(buf), "%lld", + (long long)howmany(maxblock, blocksize)); + d.s_block = strlen(buf); + if (f_commas) /* allow for commas before every third digit */ + d.s_block += (d.s_block - 1) / 3; + } + d.s_flags = maxflags; + d.s_group = maxgroup; + (void)snprintf(buf, sizeof(buf), "%llu", + (unsigned long long)maxinode); + d.s_inode = strlen(buf); + (void)snprintf(buf, sizeof(buf), "%u", maxnlink); + d.s_nlink = strlen(buf); + if (f_humanize) { + d.s_size = 4; /* min buf length for humanize_number */ + } else { + (void)snprintf(buf, sizeof(buf), "%lld", + (long long)maxsize); + d.s_size = strlen(buf); + if (f_commas) /* allow for commas before every third digit */ + d.s_size += (d.s_size - 1) / 3; + } + d.s_user = maxuser; + if (bcfile) { + (void)snprintf(buf, sizeof(buf), "%d", maxmajor); + d.s_major = strlen(buf); + (void)snprintf(buf, sizeof(buf), "%d", maxminor); + d.s_minor = strlen(buf); + if (d.s_major + d.s_minor + 2 > d.s_size) + d.s_size = d.s_major + d.s_minor + 2; + else if (d.s_size - d.s_minor - 2 > d.s_major) + d.s_major = d.s_size - d.s_minor - 2; + } else { + d.s_major = 0; + d.s_minor = 0; + } + } + + 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(const FTSENT **a, const FTSENT **b) +{ + 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) { + if (b_info != FTS_NS) + return (1); + else if (a_info != FTS_NS) + return (-1); + else + return (namecmp(*a, *b)); + } + + if (a_info != b_info && !f_listdir && + (*a)->fts_level == FTS_ROOTLEVEL) { + if (a_info == FTS_D) + return (1); + else if (b_info == FTS_D) + return (-1); + } + return (sortfcn(*a, *b)); +} -- cgit v1.2.3-70-g09d2