diff options
Diffstat (limited to 'kernel/cpu/syscall.c')
| -rw-r--r-- | kernel/cpu/syscall.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/kernel/cpu/syscall.c b/kernel/cpu/syscall.c index c68c4fe..1c10641 100644 --- a/kernel/cpu/syscall.c +++ b/kernel/cpu/syscall.c @@ -146,8 +146,7 @@ int syscall_clock_gettime(clockid_t clock_id, struct timespec *tp) { int syscall_fstat(int fd, struct stat *buf) { if (!mmu_is_valid_userpointer(buf, sizeof(struct stat))) { - return -EPERM; // TODO: Is this correct? The spec says nothing about - // this case. + return -EFAULT; } return vfs_fstat(fd, buf); } @@ -210,15 +209,18 @@ int syscall_munmap(void *addr, size_t length) { } int syscall_open(const char *file, int flags, mode_t mode) { - const char *_file = copy_and_allocate_user_string(file); - if (!_file) { + size_t len; + if (!mmu_is_valid_user_c_string(file, &len)) { return -EFAULT; } + if (len > 256 - 1) { + return -ENAMETOOLONG; + } + char _file[256]; + strlcpy(_file, file, 256); int _flags = flags; int _mode = mode; - int rc = vfs_open(_file, _flags, _mode); - kfree((void *)_file); - return rc; + return vfs_open(_file, _flags, _mode); } int syscall_open_process(int pid) { |