ladybird/Userland/ls.cpp
Andreas Kling 9a71c7759a Implement loading of linked ELF executables.
This took me a couple hours. :^)

The ELF loading code now allocates a single region for the entire
file and creates virtual memory mappings for the sections as needed.

Very nice!
2018-10-27 14:56:52 +02:00

62 lines
1.7 KiB
C++

#include <LibC/stdio.h>
#include <LibC/unistd.h>
#include <LibC/dirent.h>
#include <LibC/errno.h>
#include <LibC/string.h>
int main(int c, char** v)
{
DIR* dirp = opendir(".");
if (!dirp) {
perror("opendir failed");
return 1;
}
char pathbuf[256];
while (auto* de = readdir(dirp)) {
sprintf(pathbuf, "%s", de->d_name);
stat st;
int rc = lstat(pathbuf, &st);
if (rc == -1) {
printf("lstat(%s) failed: %s\n", pathbuf, strerror(errno));
return 2;
}
if (S_ISDIR(st.st_mode))
printf("d");
else if (S_ISLNK(st.st_mode))
printf("l");
else if (S_ISBLK(st.st_mode))
printf("b");
else if (S_ISCHR(st.st_mode))
printf("c");
else if (S_ISFIFO(st.st_mode))
printf("f");
else if (S_ISREG(st.st_mode))
printf("-");
else
printf("?");
printf("%c%c%c%c%c%c%c%c",
st.st_mode & S_IRUSR ? 'r' : '-',
st.st_mode & S_IWUSR ? 'w' : '-',
st.st_mode & S_IXUSR ? 'x' : '-',
st.st_mode & S_IRGRP ? 'r' : '-',
st.st_mode & S_IWGRP ? 'w' : '-',
st.st_mode & S_IXGRP ? 'x' : '-',
st.st_mode & S_IROTH ? 'r' : '-',
st.st_mode & S_IWOTH ? 'w' : '-'
);
if (st.st_mode & S_ISVTX)
printf("t");
else
printf("%c", st.st_mode & S_IXOTH ? 'x' : '-');
printf(" i:%x ", de->d_ino);
printf(" %x ", st.st_size);
printf("%s%c", de->d_name, S_ISDIR(st.st_mode) ? '/' : ' ');
printf("\n");
}
return 0;
}