kernel/ATA: Pass extra information to DeviceRegistry

This is needed since merging e7d482e from main.

apps/CMakeLists.txt

@@ -26,4 +26,3 @@ luna_app(login.cpp login)
 luna_app(ipc-test.cpp ipc-test)
 luna_app(mount.cpp mount)
 luna_app(umount.cpp umount)
-luna_app(ps.cpp ps)

apps/chown.cpp

@@ -40,8 +40,6 @@ Result<int> luna_main(int argc, char** argv)
                 }
 
                 gid = grp->gr_gid;
-
-                endgrent();
             }
         }
     }
@@ -75,8 +73,6 @@ Result<int> luna_main(int argc, char** argv)
 
                 gid = pw->pw_gid;
             }
-
-            endpwent();
         }
     }
 

apps/ps.cpp

@@ -1,44 +0,0 @@
-#include <errno.h>
-#include <os/ArgumentParser.h>
-#include <os/File.h>
-#include <pwd.h>
-#include <sys/pstat.h>
-#include <time.h>
-
-Result<int> luna_main(int argc, char** argv)
-{
-    os::ArgumentParser parser;
-    parser.add_description("Show a list of processes on the system.");
-    parser.add_system_program_info("ps"_sv);
-    parser.parse(argc, argv);
-
-    os::println("UID         PID   PPID       TIME CMD");
-
-    pid_t last = pstat(-1, nullptr);
-    for (pid_t pid = 1; pid <= last; pid++)
-    {
-        static process ps;
-        if (pstat(pid, &ps) < 0)
-        {
-            if (errno == ESRCH) continue;
-            return err(errno);
-        }
-
-        struct tm tm;
-        gmtime_r(&ps.ps_time.tv_sec, &tm);
-
-        char timebuf[256];
-        strftime(timebuf, sizeof(timebuf), "%H:%M:%S", &tm);
-
-        const char* user = "???";
-
-        passwd* pw = getpwuid(ps.ps_uid);
-        if (pw) user = pw->pw_name;
-
-        os::println("%-8s %6d %6d %10s %s", user, ps.ps_pid, ps.ps_ppid, timebuf, ps.ps_name);
-    }
-
-    endpwent();
-
-    return 0;
-}

apps/sh.cpp

@@ -74,7 +74,6 @@ Result<int> luna_main(int argc, char** argv)
         struct passwd* pw = getpwuid(getuid());
         if (pw) { username = pw->pw_name; }
         else { username = getenv("USER"); }
-        endpwent();
     }
 
     while (1)

apps/su.cpp

@@ -78,8 +78,6 @@ Result<int> luna_main(int argc, char** argv)
         return 1;
     }
 
-    endpwent();
-
     if ((prompt_password || getuid() != geteuid()) && *entry->pw_passwd)
     {
         char* pass = getpass();

kernel/CMakeLists.txt

@@ -31,7 +31,7 @@ set(SOURCES
     src/sys/file.cpp
     src/sys/id.cpp
     src/sys/mkdir.cpp
-    src/sys/pstat.cpp
+    src/sys/mknod.cpp
     src/sys/waitpid.cpp
     src/sys/getdents.cpp
     src/sys/stat.cpp

kernel/src/sys/mknod.cpp

@@ -0,0 +1,36 @@
+#include "Log.h"
+#include "fs/VFS.h"
+#include "memory/MemoryManager.h"
+#include "sys/Syscall.h"
+#include "thread/Scheduler.h"
+#include <bits/makedev.h>
+#include <luna/PathParser.h>
+
+Result<u64> sys_mknod(Registers*, SyscallArgs args)
+{
+    auto path = TRY(MemoryManager::strdup_from_user(args[0]));
+    mode_t mode = (mode_t)args[1];
+    dev_t dev = (dev_t)args[2];
+
+    Thread* current = Scheduler::current();
+
+    u32 maj = luna_dev_major(dev);
+    u32 min = luna_dev_minor(dev);
+
+    auto parser = TRY(PathParser::create(path.chars()));
+
+    auto dirname = TRY(parser.dirname());
+    auto basename = TRY(parser.basename());
+
+    TRY(VFS::validate_filename(basename.view()));
+
+    auto parent = TRY(VFS::resolve_path(dirname.chars(), current->auth, current->current_directory));
+    if (!VFS::can_write(parent, current->auth)) return err(EACCES);
+
+    auto inode = TRY(parent->fs()->create_device_inode(maj, min));
+    TRY(parent->add_entry(inode, basename.chars()));
+
+    TRY(inode->chmod(mode));
+
+    return 0;
+}

kernel/src/sys/pstat.cpp

@@ -1,41 +0,0 @@
-#include "memory/MemoryManager.h"
-#include "sys/Syscall.h"
-#include "thread/Scheduler.h"
-#include <bits/pstat.h>
-
-static void set_timespec(struct timespec& ts, u64 ticks)
-{
-    ts.tv_sec = ticks / 1000;
-    ts.tv_nsec = (ticks % 1000) * 1000 * 1000;
-}
-
-Result<u64> sys_pstat(Registers*, SyscallArgs args)
-{
-    pid_t pid = (pid_t)args[0];
-    struct process* ps = (struct process*)args[1];
-
-    // If pid == -1, return the PID of the last spawned thread.
-    if (pid == -1) return g_threads.expect_last()->id;
-
-    auto* thread = TRY(Result<Thread*>::from_option(Scheduler::find_by_pid(pid), ESRCH));
-
-    struct process proc;
-    proc.ps_pid = (pid_t)thread->id;
-    proc.ps_ppid = thread->parent ? (pid_t)thread->parent->id : 0;
-    proc.ps_uid = thread->auth.uid;
-    proc.ps_gid = thread->auth.gid;
-    proc.ps_euid = thread->auth.euid;
-    proc.ps_egid = thread->auth.egid;
-    proc.ps_state = (int)thread->state;
-    proc.ps_flags = thread->is_kernel ? PS_FLAG_KRNL : 0;
-    set_timespec(proc.ps_time, thread->ticks);
-    set_timespec(proc.ps_ktime, thread->ticks_in_kernel);
-    set_timespec(proc.ps_utime, thread->ticks_in_user);
-    strlcpy(proc.ps_name, thread->name.chars(), sizeof(proc.ps_name));
-    strlcpy(proc.ps_cwd, thread->current_directory_path.is_empty() ? "/" : thread->current_directory_path.chars(),
-            sizeof(proc.ps_cwd));
-
-    if (!MemoryManager::copy_to_user_typed(ps, &proc)) return err(EFAULT);
-
-    return (u64)pid;
-}

libc/CMakeLists.txt

@@ -25,7 +25,6 @@ set(SOURCES
     src/sys/ioctl.cpp
     src/sys/utsname.cpp
     src/sys/mount.cpp
-    src/sys/pstat.cpp
 )
 
 if(${LUNA_ARCH} STREQUAL "x86_64")

libc/include/bits/pstat.h

@@ -1,34 +0,0 @@
-/* bits/pstat.h: The process structure and flags for the pstat() system call. */
-
-#ifndef _BITS_PSTAT_H
-#define _BITS_PSTAT_H
-
-#include <bits/timespec.h>
-#include <sys/types.h>
-
-#define PS_IDLE 1
-#define PS_RUNNABLE 2
-#define PS_SLEEPING 3
-#define PS_WAITING 4
-#define PS_ENDED 5
-
-#define PS_FLAG_KRNL 1
-
-struct process
-{
-    pid_t ps_pid;
-    pid_t ps_ppid;
-    uid_t ps_uid;
-    uid_t ps_euid;
-    gid_t ps_gid;
-    gid_t ps_egid;
-    int ps_state;
-    int ps_flags;
-    struct timespec ps_time;
-    struct timespec ps_ktime;
-    struct timespec ps_utime;
-    char ps_name[129];
-    char ps_cwd[256];
-};
-
-#endif

libc/include/sys/pstat.h

@@ -1,23 +0,0 @@
-/* sys/pstat.h: The pstat() system call. */
-
-#ifndef _SYS_PSTAT_H
-#define _SYS_PSTAT_H
-
-#include <bits/pstat.h>
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-    /* Retrieve information about a process. */
-    pid_t pstat(pid_t pid, struct process* ps);
-
-    /* Get a string representing a process' state. */
-    const char* ps_state_name(int state);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif

libc/include/sys/stat.h

@@ -15,6 +15,9 @@ extern "C"
     /* Create a directory. */
     int mkdir(const char* path, mode_t mode);
 
+    /* Create a special file. */
+    int mknod(const char* path, mode_t mode, dev_t dev);
+
     /* Change the mode bits of a file. */
     int chmod(const char* path, mode_t mode);
 

libc/src/grp.cpp

@@ -1,5 +1,4 @@
 #include <errno.h>
-#include <fcntl.h>
 #include <grp.h>
 #include <luna/Vector.h>
 #include <stdio.h>
@@ -21,7 +20,6 @@ extern "C"
         {
             f = fopen("/etc/group", "r");
             if (!f) return nullptr;
-            fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
         }
 
         while (true)
@@ -84,9 +82,14 @@ extern "C"
 
         while ((entry = getgrent()))
         {
-            if (!strcmp(entry->gr_name, name)) { return entry; }
+            if (!strcmp(entry->gr_name, name))
+            {
+                endgrent();
+                return entry;
+            }
         }
 
+        endgrent();
         return entry;
     }
 
@@ -98,9 +101,14 @@ extern "C"
 
         while ((entry = getgrent()))
         {
-            if (entry->gr_gid == gid) { return entry; }
+            if (entry->gr_gid == gid)
+            {
+                endgrent();
+                return entry;
+            }
         }
 
+        endgrent();
         return entry;
     }
 

libc/src/pwd.cpp

@@ -1,4 +1,3 @@
-#include <fcntl.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -46,7 +45,6 @@ extern "C"
         {
             f = fopen("/etc/passwd", "r");
             if (!f) return nullptr;
-            fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
         }
 
         while (true)
@@ -95,9 +93,14 @@ extern "C"
 
         while ((entry = getpwent()))
         {
-            if (!strcmp(entry->pw_name, name)) { return entry; }
+            if (!strcmp(entry->pw_name, name))
+            {
+                endpwent();
+                return entry;
+            }
         }
 
+        endpwent();
         return entry;
     }
 
@@ -109,9 +112,14 @@ extern "C"
 
         while ((entry = getpwent()))
         {
-            if (entry->pw_uid == uid) { return entry; }
+            if (entry->pw_uid == uid)
+            {
+                endpwent();
+                return entry;
+            }
         }
 
+        endpwent();
         return entry;
     }
 

libc/src/sys/pstat.cpp

@@ -1,26 +0,0 @@
-#include <bits/errno-return.h>
-#include <sys/pstat.h>
-#include <sys/syscall.h>
-#include <unistd.h>
-
-extern "C"
-{
-    pid_t pstat(pid_t pid, struct process* ps)
-    {
-        long rc = syscall(SYS_pstat, pid, ps);
-        __errno_return(rc, pid_t);
-    }
-
-    const char* ps_state_name(int state)
-    {
-        switch (state)
-        {
-        case PS_IDLE: return "Idle";
-        case PS_RUNNABLE: return "Running";
-        case PS_SLEEPING: return "Sleeping";
-        case PS_WAITING: return "Waiting";
-        case PS_ENDED: return "Zombie";
-        default: return "???";
-        }
-    }
-}

libc/src/sys/stat.cpp

@@ -12,6 +12,12 @@ extern "C"
         __errno_return(rc, int);
     }
 
+    int mknod(const char* path, mode_t mode, dev_t dev)
+    {
+        long rc = syscall(SYS_mknod, path, mode, dev);
+        __errno_return(rc, int);
+    }
+
     int chmod(const char* path, mode_t mode)
     {
         long rc = syscall(SYS_fchmodat, AT_FDCWD, path, mode, 0);

libluna/include/luna/Syscall.h

@@ -2,10 +2,10 @@
 
 #define enumerate_syscalls(_e)                                                                                         \
     _e(exit) _e(clock_gettime) _e(mmap) _e(munmap) _e(usleep) _e(openat) _e(close) _e(read) _e(getpid) _e(write)       \
-        _e(lseek) _e(mkdir) _e(execve) _e(fork) _e(waitpid) _e(getppid) _e(fcntl) _e(getdents) _e(getuid) _e(geteuid)  \
-            _e(getgid) _e(getegid) _e(setuid) _e(setgid) _e(seteuid) _e(setegid) _e(fchmodat) _e(fchownat) _e(ioctl)   \
-                _e(fstatat) _e(chdir) _e(getcwd) _e(unlinkat) _e(uname) _e(sethostname) _e(dup2) _e(pipe) _e(mount)    \
-                    _e(umount) _e(pstat)
+        _e(lseek) _e(mkdir) _e(execve) _e(mknod) _e(fork) _e(waitpid) _e(getppid) _e(fcntl) _e(getdents) _e(getuid)    \
+            _e(geteuid) _e(getgid) _e(getegid) _e(setuid) _e(setgid) _e(seteuid) _e(setegid) _e(fchmodat) _e(fchownat) \
+                _e(ioctl) _e(fstatat) _e(chdir) _e(getcwd) _e(unlinkat) _e(uname) _e(sethostname) _e(dup2) _e(pipe)    \
+                    _e(mount) _e(umount)
 
 enum Syscalls
 {