diff options
| author | dzwdz | 2022-07-29 18:45:47 +0200 |
|---|---|---|
| committer | dzwdz | 2022-07-29 18:45:47 +0200 |
| commit | a658e1068eb2f849736931d2b99bcb6290c7ec0a (patch) | |
| tree | fd2f6d31cf74799aa7318524bea7c707767e6b0e /src/kernel/syscalls.c | |
| parent | c6424fbc55298399f133ca1ede11e1f0b4a5c824 (diff) | |
syscall: up the max argument count to 5; make write accept flags
Diffstat (limited to 'src/kernel/syscalls.c')
| -rw-r--r-- | src/kernel/syscalls.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/kernel/syscalls.c b/src/kernel/syscalls.c index 9c4e2fa..0dec4c5 100644 --- a/src/kernel/syscalls.c +++ b/src/kernel/syscalls.c @@ -1,3 +1,4 @@ +#include <camellia/errno.h> #include <camellia/flags.h> #include <camellia/syscalls.h> #include <kernel/arch/generic.h> @@ -229,9 +230,11 @@ long _syscall_read(handle_t handle_num, void __user *buf, size_t len, long offse return -1; // dummy } -long _syscall_write(handle_t handle_num, const void __user *buf, size_t len, long offset) { +long _syscall_write(handle_t handle_num, const void __user *buf, size_t len, long offset, int flags) { struct handle *h = process_handle_get(process_current, handle_num); if (!h) SYSCALL_RETURN(-1); + if (flags != 0) + SYSCALL_RETURN(-ENOSYS); switch (h->type) { case HANDLE_FILE: vfsreq_create((struct vfs_request) { @@ -244,6 +247,7 @@ long _syscall_write(handle_t handle_num, const void __user *buf, size_t len, lon .offset = offset, .caller = process_current, .backend = h->backend, + .flags = flags }); break; case HANDLE_PIPE: @@ -387,7 +391,7 @@ void _syscall_debug_klog(const void __user *buf, size_t len) { // kprintf("[klog] %x\t%s\n", process_current->id, kbuf); } -long _syscall(long num, long a, long b, long c, long d) { +long _syscall(long num, long a, long b, long c, long d, long e) { /* note: this isn't the only place where syscalls get called from! * see execbuf */ switch (num) { @@ -413,7 +417,7 @@ long _syscall(long num, long a, long b, long c, long d) { _syscall_read(a, (userptr_t)b, c, d); break; case _SYSCALL_WRITE: - _syscall_write(a, (userptr_t)b, c, d); + _syscall_write(a, (userptr_t)b, c, d, e); break; case _SYSCALL_CLOSE: _syscall_close(a); |