Add mk_shm syscall ; replace get_mode by fctl.

4 files changed, 29 insertions, 10 deletions

diff --git a/src/kernel/user/elf.c b/src/kernel/user/elf.c
index ed9d3c4..2fcc915 100644
--- a/src/kernel/user/elf.c
+++ b/src/kernel/user/elf.c
@@ -34,7 +34,7 @@ proc_entry_t elf_load(fs_handle_t *f, process_t* process) {
 		if (read_phdr_r != sizeof(elf_phdr_t)) goto error;
 
 		if (phdr.p_type == PT_LOAD) {
-			if ((phdr.p_flags & PF_W) || !(file_get_mode(f) & FM_MMAP)) {
+			if ((phdr.p_flags & PF_W) || !(f->mode & FM_MMAP)) {
 				bool mmap_ok = mmap(process, (void*)phdr.p_vaddr, phdr.p_memsz,
 						((phdr.p_flags & PF_R) ? MM_READ : 0) | MM_WRITE);
 				if (!mmap_ok) goto error;
diff --git a/src/kernel/user/process.c b/src/kernel/user/process.c
index 85530ca..18b4255 100644
--- a/src/kernel/user/process.c
+++ b/src/kernel/user/process.c
@@ -529,7 +529,7 @@ bool mmap_file(process_t *proc, fs_handle_t *h, size_t offset, void* addr, size_
 	if ((uint32_t)addr & (~PAGE_MASK)) return false;
 	if ((uint32_t)offset & (~PAGE_MASK)) return false;
 
-	int fmode = file_get_mode(h);
+	int fmode = h->mode;
 	if (!(fmode & FM_MMAP) || !(fmode & FM_READ)) return false;
 	if ((mode & MM_WRITE) && !(fmode & FM_WRITE)) return false;
 
@@ -573,7 +573,7 @@ bool mchmap(process_t *proc, void* addr, int mode) {
 	if (r == 0) return false;
 	
 	if (r->file != 0) {
-		if ((mode & MM_WRITE) && !(file_get_mode(r->file) & FM_WRITE)) return false;
+		if ((mode & MM_WRITE) && !(r->file->mode & FM_WRITE)) return false;
 	}
 	r->mode = mode;
 
diff --git a/src/kernel/user/syscall.c b/src/kernel/user/syscall.c
index 67ed317..15b0851 100644
--- a/src/kernel/user/syscall.c
+++ b/src/kernel/user/syscall.c
@@ -276,11 +276,21 @@ static uint32_t ioctl_sc(sc_args_t args) {
 	return file_ioctl(h, args.b, data);
 }
 
-static uint32_t get_mode_sc(sc_args_t args) {
+static uint32_t fctl_sc(sc_args_t args) {
 	fs_handle_t *h = proc_read_fd(current_process(), args.a);
 	if (h == 0) return 0;
 
-	return file_get_mode(h);
+	if (args.b == FC_GET_MODE) {
+		return h->mode;
+	} else if (args.b == FC_SET_BLOCKING) {
+		h->mode |= FM_BLOCKING;
+		return 1;
+	} else if (args.b == FC_SET_NONBLOCKING) {
+		h->mode &= ~FM_BLOCKING;
+		return 1;
+	} else {
+		return 0;
+	}
 }
 
 static uint32_t select_sc(sc_args_t args) {
@@ -375,6 +385,19 @@ error:
 	return false;
 }
 
+static uint32_t make_shm_sc(sc_args_t args) {
+	fs_handle_t *h = make_shm(args.a);
+	if (h == 0) return 0;
+
+	int fd = proc_add_fd(current_process(), h);
+	if (fd == 0) {
+		unref_file(h);
+		return 0;
+	}
+
+	return fd;
+}
+
 static uint32_t gen_token_sc(sc_args_t args) {
 	fs_handle_t *h = proc_read_fd(current_process(), args.a);
 	if (h == 0) return false;
@@ -694,7 +717,7 @@ void setup_syscall_table() {
 	sc_handlers[SC_READDIR] = readdir_sc;
 	sc_handlers[SC_STAT_OPEN] = stat_open_sc;
 	sc_handlers[SC_IOCTL] = ioctl_sc;
-	sc_handlers[SC_GET_MODE] = get_mode_sc;
+	sc_handlers[SC_FCTL] = fctl_sc;
 	sc_handlers[SC_SELECT] = select_sc;
 
 	sc_handlers[SC_MK_CHANNEL] = make_channel_sc;
diff --git a/src/kernel/user/vfs.c b/src/kernel/user/vfs.c
index 6df0a25..a967f70 100644
--- a/src/kernel/user/vfs.c
+++ b/src/kernel/user/vfs.c
@@ -462,10 +462,6 @@ void unref_file(fs_handle_t *file) {
 	}
 }
 
-int file_get_mode(fs_handle_t *f) {
-	return f->mode;
-}
-
 size_t file_read(fs_handle_t *f, size_t offset, size_t len, char* buf) {
 	if (!(f->mode & FM_READ)) return 0;