Userland: Add a simple /bin/stat program.

Kernel/sync.sh

@@ -72,6 +72,7 @@ cp -v ../Userland/ln mnt/bin/ln
 cp -v ../Userland/df mnt/bin/df
 cp -v ../Userland/su mnt/bin/su
 cp -v ../Userland/env mnt/bin/env
+cp -v ../Userland/stat mnt/bin/stat
 chmod 4755 mnt/bin/su
 cp -v ../Applications/Terminal/Terminal mnt/bin/Terminal
 cp -v ../Applications/FontEditor/FontEditor mnt/bin/FontEditor

Userland/.gitignore

@@ -36,3 +36,4 @@ df
 su
 env
 chown
+stat

Userland/Makefile

@@ -32,6 +32,7 @@ OBJS = \
        ln.o \
        su.o \
        env.o \
+       stat.o \
        rm.o
 
 APPS = \
@@ -69,6 +70,7 @@ APPS = \
        df \
        su \
        env \
+       stat \
        rm
 
 ARCH_FLAGS =
@@ -193,6 +195,9 @@ su: su.o
 env: env.o
 	$(LD) -o $@ $(LDFLAGS) $< -lc
 
+stat: stat.o
+	$(LD) -o $@ $(LDFLAGS) $< -lc
+
 .cpp.o:
 	@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<
 

Userland/stat.cpp

@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <time.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/stat.h>
+
+int main(int argc, char** argv)
+{
+    if (argc == 1) {
+        printf("stat <file>\n");
+        return 1;
+    }
+    struct stat st;
+    int rc = lstat(argv[1], &st);
+    if (rc < 0) {
+        perror("lstat");
+        return 1;
+    }
+    printf("    File: %s\n", argv[1]);
+    printf("   Inode: %u\n", st.st_ino);
+    if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
+        printf("  Device: %u,%u\n", major(st.st_rdev), minor(st.st_rdev));
+    else
+        printf("    Size: %u\n", st.st_size);
+    printf("   Links: %u\n", st.st_nlink);
+    printf("  Blocks: %u\n", st.st_blocks);
+    printf("     UID: %u", st.st_uid);
+    if (auto* pwd = getpwuid(st.st_uid)) {
+        printf(" (%s)", pwd->pw_name);
+    }
+    printf("\n");
+    printf("     GID: %u", st.st_gid);
+    if (auto* grp = getgrgid(st.st_gid)) {
+        printf(" (%s)", grp->gr_name);
+    }
+    printf("\n");
+    printf("    Mode: (%o/", st.st_mode);
+
+    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_ISSOCK(st.st_mode))
+        printf("s");
+    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_ISUID ? 's' : (st.st_mode & S_IXUSR ? 'x' : '-'),
+        st.st_mode & S_IRGRP ? 'r' : '-',
+        st.st_mode & S_IWGRP ? 'w' : '-',
+        st.st_mode & S_ISGID ? 's' : (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(")\n");
+
+    auto print_time = [] (time_t t) {
+        auto* tm = localtime(&t);
+        printf("%4u-%02u-%02u %02u:%02u:%02u\n",
+            tm->tm_year + 1900,
+            tm->tm_mon + 1,
+            tm->tm_mday,
+            tm->tm_hour,
+            tm->tm_min,
+            tm->tm_sec);
+    };
+
+    printf("Accessed: ");
+    print_time(st.st_atime);
+    printf("Modified: ");
+    print_time(st.st_mtime);
+    printf(" Changed: ");
+    print_time(st.st_ctime);
+
+    return 0;
+}