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