119 lines
2.5 KiB
C
119 lines
2.5 KiB
C
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#include <ulib.h>
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#include <stdio.h>
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#include <string.h>
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#include <dir.h>
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#include <file.h>
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#include <stat.h>
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#include <dirent.h>
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#include <unistd.h>
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#define printf(...) fprintf(1, __VA_ARGS__)
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#define BUFSIZE 4096
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static char
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getmode(uint32_t st_mode) {
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char mode = '?';
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if (S_ISREG(st_mode)) mode = '-';
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if (S_ISDIR(st_mode)) mode = 'd';
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if (S_ISLNK(st_mode)) mode = 'l';
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if (S_ISCHR(st_mode)) mode = 'c';
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if (S_ISBLK(st_mode)) mode = 'b';
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return mode;
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}
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static int
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getstat(const char *name, struct stat *stat) {
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int fd, ret;
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if ((fd = open(name, O_RDONLY)) < 0) {
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return fd;
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}
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ret = fstat(fd, stat);
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close(fd);
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return ret;
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}
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void
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lsstat(struct stat *stat, const char *filename) {
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printf(" [%c]", getmode(stat->st_mode));
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printf(" %3d(h)", stat->st_nlinks);
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printf(" %8d(b)", stat->st_blocks);
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printf(" %8d(s)", stat->st_size);
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printf(" %s\n", filename);
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}
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int
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lsdir(const char *path) {
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struct stat __stat, *stat = &__stat;
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int ret;
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DIR *dirp = opendir(".");
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if (dirp == NULL) {
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return -1;
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}
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struct dirent *direntp;
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while ((direntp = readdir(dirp)) != NULL) {
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if ((ret = getstat(direntp->name, stat)) != 0) {
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goto failed;
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}
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lsstat(stat, direntp->name);
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}
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printf("lsdir: step 4\n");
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closedir(dirp);
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return 0;
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failed:
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closedir(dirp);
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return ret;
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}
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int
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ls(const char *path) {
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struct stat __stat, *stat = &__stat;
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int ret, type;
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if ((ret = getstat(path, stat)) != 0) {
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return ret;
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}
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static const char *filetype[] = {
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" [ file ]",
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" [directory]",
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" [ symlink ]",
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" [character]",
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" [ block ]",
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" [ ????? ]",
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};
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switch (getmode(stat->st_mode)) {
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case '0': type = 0; break;
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case 'd': type = 1; break;
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case 'l': type = 2; break;
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case 'c': type = 3; break;
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case 'b': type = 4; break;
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default: type = 5; break;
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}
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printf(" @ is %s", filetype[type]);
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printf(" %d(hlinks)", stat->st_nlinks);
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printf(" %d(blocks)", stat->st_blocks);
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printf(" %d(bytes) : @'%s'\n", stat->st_size, path);
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if (S_ISDIR(stat->st_mode)) {
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return lsdir(path);
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}
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return 0;
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}
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int
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main(int argc, char **argv) {
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if (argc == 1) {
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return ls(".");
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}
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else {
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int i, ret;
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for (i = 1; i < argc; i ++) {
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if ((ret = ls(argv[i])) != 0) {
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return ret;
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}
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}
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}
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return 0;
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}
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