Added filesystem and proc permissions

2 files changed, 16 insertions, 0 deletions

diff --git a/kernel/inc/fs.h b/kernel/inc/fs.h
index 64f3970..1069597 100644
--- a/kernel/inc/fs.h
+++ b/kernel/inc/fs.h
@@ -32,6 +32,7 @@ void device_add(struct device *dev);
  */
 
 enum vfs_type { VFS_DEVFS, VFS_TMPFS, VFS_PROCFS, VFS_EXT2 };
+enum vfs_perm { VFS_EXEC, VFS_WRITE, VFS_READ };
 
 struct vfs {
 	enum vfs_type type;
@@ -40,6 +41,7 @@ struct vfs {
 	s32 (*read)(const char *path, void *buf, u32 offset, u32 count, struct device *dev);
 	s32 (*write)(const char *path, void *buf, u32 offset, u32 count, struct device *dev);
 	s32 (*stat)(const char *path, struct stat *buf, struct device *dev);
+	u8 (*perm)(const char *path, enum vfs_perm perm, struct device *dev);
 	u8 (*ready)(const char *path, struct device *dev);
 };
 
@@ -71,6 +73,17 @@ struct device *device_get_by_name(const char *name);
 #define EXT2_ROOT 2
 #define EXT2_MAGIC 0x0000EF53
 
+// TODO: Support other and group permissions?
+#define EXT2_PERM_OEXEC 0x001
+#define EXT2_PERM_OWRITE 0x002
+#define EXT2_PERM_OREAD 0x004
+#define EXT2_PERM_GEXEC 0x008
+#define EXT2_PERM_GWRITE 0x010
+#define EXT2_PERM_GREAD 0x020
+#define EXT2_PERM_UEXEC 0x040
+#define EXT2_PERM_UWRITE 0x080
+#define EXT2_PERM_UREAD 0x100
+
 struct ext2_superblock {
 	u32 total_inodes;
 	u32 total_blocks;
@@ -155,6 +168,7 @@ struct ext2_file {
 
 s32 ext2_read(const char *path, void *buf, u32 offset, u32 count, struct device *dev);
 s32 ext2_stat(const char *path, struct stat *buf, struct device *dev);
+u8 ext2_perm(const char *path, enum vfs_perm perm, struct device *dev);
 u8 ext2_ready(const char *path, struct device *dev);
 
 #endif
diff --git a/kernel/inc/proc.h b/kernel/inc/proc.h
index 6be7da3..4a75638 100644
--- a/kernel/inc/proc.h
+++ b/kernel/inc/proc.h
@@ -26,6 +26,7 @@ struct proc_wait {
 
 struct proc {
 	u32 pid;
+	u8 super;
 	char name[32];
 	struct regs regs;
 	struct proc_wait wait; // dev_id
@@ -37,6 +38,7 @@ void scheduler(struct regs *regs);
 void proc_init(void);
 void proc_print(void);
 struct proc *proc_current(void);
+u8 proc_super(void);
 struct proc *proc_from_pid(u32 pid);
 void proc_exit(struct proc *proc, int status);
 void proc_yield(struct regs *r);