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LibC: Implement umask()

This commit is contained in:
Bananymous 2024-07-31 23:25:11 +03:00
parent fc6c39e670
commit 5fca5c774a
3 changed files with 16 additions and 4 deletions
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6
userspace/libraries/LibC/fcntl.cpp
View File

@ -6,7 +6,7 @@
int creat(const char* path, mode_t mode) int creat(const char* path, mode_t mode)
{ {
return syscall(SYS_CREATE, path, S_IFREG | mode); return syscall(SYS_CREATE, path, S_IFREG | __UMASKED_MODE(mode));
} }
int open(const char* path, int oflag, ...) int open(const char* path, int oflag, ...)
@ -16,7 +16,7 @@ int open(const char* path, int oflag, ...)
mode_t mode = va_arg(args, mode_t); mode_t mode = va_arg(args, mode_t);
va_end(args); va_end(args);
return syscall(SYS_OPEN, path, oflag, mode); return syscall(SYS_OPEN, path, oflag, __UMASKED_MODE(mode));
} }
int openat(int fd, const char* path, int oflag, ...) int openat(int fd, const char* path, int oflag, ...)
@ -26,7 +26,7 @@ int openat(int fd, const char* path, int oflag, ...)
mode_t mode = va_arg(args, mode_t); mode_t mode = va_arg(args, mode_t);
va_end(args); va_end(args);
return syscall(SYS_OPENAT, fd, path, oflag, mode); return syscall(SYS_OPENAT, fd, path, oflag, __UMASKED_MODE(mode));
} }
int fcntl(int fildes, int cmd, ...) int fcntl(int fildes, int cmd, ...)

3
userspace/libraries/LibC/include/sys/stat.h
View File

@ -42,6 +42,9 @@ struct stat
#define st_ctime st_ctim.tv_sec #define st_ctime st_ctim.tv_sec
#define st_mtime st_mtim.tv_sec #define st_mtime st_mtim.tv_sec
extern mode_t __umask;
#define __UMASKED_MODE(mode) ((mode) & ~__umask)
#define S_IRWXU 00700 #define S_IRWXU 00700
#define S_IRUSR 00400 #define S_IRUSR 00400
#define S_IWUSR 00200 #define S_IWUSR 00200

11
userspace/libraries/LibC/sys/stat.cpp
View File

@ -4,6 +4,8 @@
#include <sys/syscall.h> #include <sys/syscall.h>
#include <unistd.h> #include <unistd.h>
mode_t __umask = 0;
int chmod(const char* path, mode_t mode) int chmod(const char* path, mode_t mode)
{ {
return syscall(SYS_CHMOD, path, mode); return syscall(SYS_CHMOD, path, mode);
@ -29,7 +31,14 @@ int stat(const char* __restrict path, struct stat* __restrict buf)
return syscall(SYS_STAT, path, buf, 0); return syscall(SYS_STAT, path, buf, 0);
} }
mode_t umask(mode_t cmask)
{
mode_t old = __umask;
__umask = cmask;
return old;
}
int mkdir(const char* path, mode_t mode) int mkdir(const char* path, mode_t mode)
{ {
return syscall(SYS_CREATE_DIR, path, mode); return syscall(SYS_CREATE_DIR, path, __UMASKED_MODE(mode));
} }