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Kernel: Add syscall for reading directory entries

This commit is contained in:
Bananymous 2023-06-11 00:18:08 +03:00
parent f7de310889
commit 7a5d5cabad
3 changed files with 20 additions and 0 deletions
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11
kernel/kernel/Syscall.cpp
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@ -144,6 +144,14 @@ namespace Kernel
return 0; return 0;
} }
long sys_read_dir_entries(int fd, API::DirectoryEntryList* buffer, size_t buffer_size)
{
auto ret = Process::current().read_next_directory_entries(fd, buffer, buffer_size);
if (ret.is_error())
return -ret.error().get_error_code();
return 0;
}
extern "C" long sys_fork_trampoline(); extern "C" long sys_fork_trampoline();
extern "C" long cpp_syscall_handler(int syscall, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4, uintptr_t arg5) extern "C" long cpp_syscall_handler(int syscall, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4, uintptr_t arg5)
@ -215,6 +223,9 @@ namespace Kernel
case SYS_SETENVP: case SYS_SETENVP:
ret = sys_setenvp((char**)arg1); ret = sys_setenvp((char**)arg1);
break; break;
case SYS_READ_DIR_ENTRIES:
ret = sys_read_dir_entries((int)arg1, (API::DirectoryEntryList*)arg2, (size_t)arg3);
break;
default: default:
Kernel::panic("Unknown syscall {}", syscall); Kernel::panic("Unknown syscall {}", syscall);
} }

1
libc/include/sys/syscall.h
View File

@ -24,6 +24,7 @@ __BEGIN_DECLS
#define SYS_WAIT 17 #define SYS_WAIT 17
#define SYS_STAT 18 #define SYS_STAT 18
#define SYS_SETENVP 19 #define SYS_SETENVP 19
#define SYS_READ_DIR_ENTRIES 20
__END_DECLS __END_DECLS

8
libc/unistd.cpp
View File

@ -163,6 +163,14 @@ long syscall(long syscall, ...)
ret = Kernel::syscall(SYS_SETENVP, (uintptr_t)envp); ret = Kernel::syscall(SYS_SETENVP, (uintptr_t)envp);
break; break;
} }
case SYS_READ_DIR_ENTRIES:
{
int fd = va_arg(args, int);
void* buffer = va_arg(args, void*);
size_t buffer_size = va_arg(args, size_t);
ret = Kernel::syscall(SYS_READ_DIR_ENTRIES, fd, (uintptr_t)buffer, buffer_size);
break;
}
default: default:
puts("LibC: Unhandeled syscall"); puts("LibC: Unhandeled syscall");
ret = -ENOSYS; ret = -ENOSYS;