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ls: Show user name and group name if available. (#151)

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Fixes #150
This commit is contained in:
Mustafa 2019-06-01 07:23:35 -04:00 • committed by Andreas Kling
parent 51a74fb3bb
commit a4726b846c
2 changed files with 24 additions and 3 deletions
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3
Servers/SystemServer/.gitignore vendored Normal file
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@ -0,0 +1,3 @@
SystemServer
main.d
main.o

24
Userland/ls.cpp
View file

@ -11,6 +11,8 @@
#include <AK/AKString.h>
#include <AK/Vector.h>
#include <LibCore/CDirIterator.h>
#include <pwd.h>
#include <grp.h>
static int do_file_system_object_long(const char* path);
static int do_file_system_object_short(const char* path);
@ -19,10 +21,11 @@ static bool flag_colorize = true;
static bool flag_long = false;
static bool flag_show_dotfiles = false;
static bool flag_show_inode = false;
static bool flag_print_numeric = false;
int main(int argc, char** argv)
{
static const char* valid_option_characters = "laiG";
static const char* valid_option_characters = "laiGn";
int opt;
while ((opt = getopt(argc, argv, valid_option_characters)) != -1) {
switch (opt) {
@ -38,6 +41,10 @@ int main(int argc, char** argv)
case 'i':
flag_show_inode = true;
break;
case 'n':
flag_print_numeric = true;
break;
default:
fprintf(stderr, "usage: ls [-%s] [paths...]\n", valid_option_characters);
return 1;
@ -156,10 +163,21 @@ bool print_filesystem_object(const char* path, const char* name) {
else
printf("%c", st.st_mode & S_IXOTH ? 'x' : '-');
printf(" %4u %4u", st.st_uid, st.st_gid);
passwd* pwd = getpwuid(st.st_uid);
group* grp = getgrgid(st.st_gid);
if (!flag_print_numeric && pwd) {
printf(" %5s", pwd->pw_name);
} else {
printf(" %5u", st.st_uid);
}
if (!flag_print_numeric && grp) {
printf(" %5s", grp->gr_name);
} else {
printf(" %5u", st.st_gid);
}
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
printf(" %4u,%4u ", major(st.st_rdev), minor(st.st_rdev));
printf(" %4u,%4u ", major(st.st_rdev), minor(st.st_rdev));
else
printf(" %10u ", st.st_size);