diff options
Diffstat (limited to 'toolbox/ls.c')
-rw-r--r-- | toolbox/ls.c | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/toolbox/ls.c b/toolbox/ls.c deleted file mode 100644 index f609df2..0000000 --- a/toolbox/ls.c +++ /dev/null @@ -1,285 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/types.h> -#include <dirent.h> -#include <errno.h> - -#include <sys/stat.h> -#include <unistd.h> -#include <time.h> - -#include <pwd.h> -#include <grp.h> - -#include <linux/kdev_t.h> - -// bits for flags argument -#define LIST_LONG (1 << 0) -#define LIST_ALL (1 << 1) -#define LIST_RECURSIVE (1 << 2) - -// fwd -static int listpath(const char *name, int flags); - -static char mode2kind(unsigned mode) -{ - switch(mode & S_IFMT){ - case S_IFSOCK: return 's'; - case S_IFLNK: return 'l'; - case S_IFREG: return '-'; - case S_IFDIR: return 'd'; - case S_IFBLK: return 'b'; - case S_IFCHR: return 'c'; - case S_IFIFO: return 'p'; - default: return '?'; - } -} - -static void mode2str(unsigned mode, char *out) -{ - *out++ = mode2kind(mode); - - *out++ = (mode & 0400) ? 'r' : '-'; - *out++ = (mode & 0200) ? 'w' : '-'; - if(mode & 04000) { - *out++ = (mode & 0100) ? 's' : 'S'; - } else { - *out++ = (mode & 0100) ? 'x' : '-'; - } - *out++ = (mode & 040) ? 'r' : '-'; - *out++ = (mode & 020) ? 'w' : '-'; - if(mode & 02000) { - *out++ = (mode & 010) ? 's' : 'S'; - } else { - *out++ = (mode & 010) ? 'x' : '-'; - } - *out++ = (mode & 04) ? 'r' : '-'; - *out++ = (mode & 02) ? 'w' : '-'; - if(mode & 01000) { - *out++ = (mode & 01) ? 't' : 'T'; - } else { - *out++ = (mode & 01) ? 'x' : '-'; - } - *out = 0; -} - -static void user2str(unsigned uid, char *out) -{ - struct passwd *pw = getpwuid(uid); - if(pw) { - strcpy(out, pw->pw_name); - } else { - sprintf(out, "%d", uid); - } -} - -static void group2str(unsigned gid, char *out) -{ - struct group *gr = getgrgid(gid); - if(gr) { - strcpy(out, gr->gr_name); - } else { - sprintf(out, "%d", gid); - } -} - -static int listfile(const char *path, int flags) -{ - struct stat s; - char date[32]; - char mode[16]; - char user[16]; - char group[16]; - const char *name; - - /* name is anything after the final '/', or the whole path if none*/ - name = strrchr(path, '/'); - if(name == 0) { - name = path; - } else { - name++; - } - - if(lstat(path, &s) < 0) { - return -1; - } - - mode2str(s.st_mode, mode); - user2str(s.st_uid, user); - group2str(s.st_gid, group); - - strftime(date, 32, "%Y-%m-%d %H:%M", localtime((const time_t*)&s.st_mtime)); - date[31] = 0; - -// 12345678901234567890123456789012345678901234567890123456789012345678901234567890 -// MMMMMMMM UUUUUUUU GGGGGGGGG XXXXXXXX YYYY-MM-DD HH:MM NAME (->LINK) - - switch(s.st_mode & S_IFMT) { - case S_IFBLK: - case S_IFCHR: - printf("%s %-8s %-8s %3d, %3d %s %s\n", - mode, user, group, - (int) MAJOR(s.st_rdev), (int) MINOR(s.st_rdev), - date, name); - break; - case S_IFREG: - printf("%s %-8s %-8s %8d %s %s\n", - mode, user, group, (int) s.st_size, date, name); - break; - case S_IFLNK: { - char linkto[256]; - int len; - - len = readlink(path, linkto, 256); - if(len < 0) return -1; - - if(len > 255) { - linkto[252] = '.'; - linkto[253] = '.'; - linkto[254] = '.'; - linkto[255] = 0; - } else { - linkto[len] = 0; - } - - printf("%s %-8s %-8s %s %s -> %s\n", - mode, user, group, date, name, linkto); - break; - } - default: - printf("%s %-8s %-8s %s %s\n", - mode, user, group, date, name); - - } - return 0; -} - -static int listdir(const char *name, int flags) -{ - char tmp[4096]; - DIR *d; - struct dirent *de; - - d = opendir(name); - if(d == 0) { - fprintf(stderr, "opendir failed, %s\n", strerror(errno)); - return -1; - } - - while((de = readdir(d)) != 0){ - if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) continue; - if(de->d_name[0] == '.' && (flags & LIST_ALL) == 0) continue; - if ((flags & LIST_LONG) != 0) { - sprintf(tmp, "%s/%s", name, de->d_name); - listfile(tmp, flags); - } else { - printf("%s\n", de->d_name); - } - } - - if (flags & LIST_RECURSIVE) { - rewinddir(d); - - while ((de = readdir(d)) != 0) { - struct stat s; - int err; - - if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) - continue; - if (de->d_name[0] == '.' && (flags & LIST_ALL) == 0) - continue; - - if (!strcmp(name, "/")) sprintf(tmp, "/%s", de->d_name); - else sprintf(tmp, "%s/%s", name, de->d_name); - - /* - * If the name ends in a '/', use stat() so we treat it like a - * directory even if it's a symlink. - */ - if (tmp[strlen(tmp)-1] == '/') - err = stat(tmp, &s); - else - err = lstat(tmp, &s); - - if (err < 0) { - perror(tmp); - closedir(d); - return -1; - } - - if (S_ISDIR(s.st_mode)) { - printf("\n%s:\n", tmp); - listdir(tmp, flags); - } - } - } - - closedir(d); - return 0; -} - -static int listpath(const char *name, int flags) -{ - struct stat s; - int err; - - /* - * If the name ends in a '/', use stat() so we treat it like a - * directory even if it's a symlink. - */ - if (name[strlen(name)-1] == '/') - err = stat(name, &s); - else - err = lstat(name, &s); - - if (err < 0) { - perror(name); - return -1; - } - - if (S_ISDIR(s.st_mode)) { - if (flags & LIST_RECURSIVE) - printf("\n%s:\n", name); - return listdir(name, flags); - } else { - if ((flags & LIST_LONG) != 0) { - /* yeah this calls stat() again*/ - return listfile(name, flags); - } else { - printf("%s\n", name); - return 0; - } - } -} - -int ls_main(int argc, char **argv) -{ - int flags = 0; - int listed = 0; - - if(argc > 1) { - int i; - int err = 0; - - for (i = 1; i < argc; i++) { - if(!strcmp(argv[i], "-l")) { - flags |= LIST_LONG; - } else if (!strcmp(argv[i], "-a")) { - flags |= LIST_ALL; - } else if (!strcmp(argv[i], "-R")) { - flags |= LIST_RECURSIVE; - } else { - listed++; - if(listpath(argv[i], flags) != 0) { - err = EXIT_FAILURE; - } - } - } - - if (listed > 0) return err; - } - - // list working directory if no files or directories were specified - return listpath(".", flags); -} |