diff options
Diffstat (limited to 'stand/common/ls.c')
| -rw-r--r-- | stand/common/ls.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/stand/common/ls.c b/stand/common/ls.c new file mode 100644 index 0000000..cd6b7c4 --- /dev/null +++ b/stand/common/ls.c @@ -0,0 +1,212 @@ +/* + * $NetBSD: ls.c,v 1.3 1997/06/13 13:48:47 drochner Exp $ + */ + +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1996 + * Matthias Drochner. 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <ufs/ufs/dinode.h> +#include <ufs/ufs/dir.h> + +#include <stand.h> +#include <string.h> + +#include "bootstrap.h" + +static char typestr[] = "?fc?d?b? ?l?s?w"; + +static int ls_getdir(char **pathp); + +COMMAND_SET(ls, "ls", "list files", command_ls); + +static int +command_ls(int argc, char *argv[]) +{ + int fd; + struct stat sb; + struct dirent *d; + char *buf, *path; + char lbuf[128]; /* one line */ + int result, ch; + int verbose; + + result = CMD_OK; + fd = -1; + verbose = 0; + optind = 1; + optreset = 1; + while ((ch = getopt(argc, argv, "l")) != -1) { + switch (ch) { + case 'l': + verbose = 1; + break; + case '?': + default: + /* getopt has already reported an error */ + return (CMD_OK); + } + } + argv += (optind - 1); + argc -= (optind - 1); + + if (argc < 2) { + path = ""; + } else { + path = argv[1]; + } + + if (stat(path, &sb) == 0 && !S_ISDIR(sb.st_mode)) { + if (verbose) { + printf(" %c %8d %s\n", + typestr[sb.st_mode >> 12], + (int)sb.st_size, path); + } else { + printf(" %c %s\n", + typestr[sb.st_mode >> 12], path); + } + return (CMD_OK); + } + + fd = ls_getdir(&path); + if (fd == -1) { + result = CMD_ERROR; + goto out; + } + pager_open(); + pager_output(path); + pager_output("\n"); + + while ((d = readdirfd(fd)) != NULL) { + if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) { + if (d->d_type == 0 || verbose) { + /* stat the file, if possible */ + sb.st_size = 0; + sb.st_mode = 0; + buf = malloc(strlen(path) + strlen(d->d_name) + 2); + if (buf != NULL) { + sprintf(buf, "%s/%s", path, d->d_name); + /* ignore return, could be symlink, etc. */ + if (stat(buf, &sb)) { + sb.st_size = 0; + sb.st_mode = 0; + } + free(buf); + } + } + if (verbose) { + snprintf(lbuf, sizeof(lbuf), " %c %8d %s\n", + typestr[d->d_type? d->d_type:sb.st_mode >> 12], + (int)sb.st_size, d->d_name); + } else { + snprintf(lbuf, sizeof(lbuf), " %c %s\n", + typestr[d->d_type? d->d_type:sb.st_mode >> 12], d->d_name); + } + if (pager_output(lbuf)) + goto out; + } + } + out: + pager_close(); + if (fd != -1) + close(fd); + free(path); /* ls_getdir() did allocate path */ + return (result); +} + +/* + * Given (path) containing a vaguely reasonable path specification, return an fd + * on the directory, and an allocated copy of the path to the directory. + */ +static int +ls_getdir(char **pathp) +{ + struct stat sb; + int fd; + const char *cp; + char *path; + + fd = -1; + + /* one extra byte for a possible trailing slash required */ + path = malloc(strlen(*pathp) + 2); + if (path == NULL) { + snprintf(command_errbuf, sizeof (command_errbuf), + "out of memory"); + goto out; + } + strcpy(path, *pathp); + + /* Make sure the path is respectable to begin with */ + if (archsw.arch_getdev(NULL, path, &cp)) { + snprintf(command_errbuf, sizeof(command_errbuf), + "bad path '%s'", path); + goto out; + } + + /* If there's no path on the device, assume '/' */ + if (*cp == 0) + strcat(path, "/"); + + fd = open(path, O_RDONLY); + if (fd < 0) { + snprintf(command_errbuf, sizeof(command_errbuf), + "open '%s' failed: %s", path, strerror(errno)); + goto out; + } + if (fstat(fd, &sb) < 0) { + snprintf(command_errbuf, sizeof(command_errbuf), + "stat failed: %s", strerror(errno)); + goto out; + } + if (!S_ISDIR(sb.st_mode)) { + snprintf(command_errbuf, sizeof(command_errbuf), + "%s: %s", path, strerror(ENOTDIR)); + goto out; + } + + *pathp = path; + return (fd); + + out: + free(path); + *pathp = NULL; + if (fd != -1) + close(fd); + return (-1); +} |
