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Kernel: Make chdir() take path+length

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This commit is contained in:
Andreas Kling 2020-01-05 22:06:25 +01:00
parent f231e9ea76
commit c5890afc8b
Notes: sideshowbarker 2024-07-19 10:19:34 +09:00
3 changed files with 6 additions and 5 deletions
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7
Kernel/Process.cpp
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@ -1555,12 +1555,13 @@ int Process::sys$readlink(const char* path, char* buffer, ssize_t size)
return 0;
}
int Process::sys$chdir(const char* path)
int Process::sys$chdir(const char* user_path, size_t path_length)
{
SmapDisabler disabler;
if (!validate_read_str(path))
if (!validate_read(user_path, path_length))
return -EFAULT;
auto directory_or_error = VFS::the().open_directory(StringView(path), current_directory());
auto path = copy_string_from_user(user_path, path_length);
auto directory_or_error = VFS::the().open_directory(path, current_directory());
if (directory_or_error.is_error())
return directory_or_error.error();
m_cwd = *directory_or_error.value();

2
Kernel/Process.h
View file

@ -144,7 +144,7 @@ public:
int sys$poll(pollfd*, int nfds, int timeout);
ssize_t sys$get_dir_entries(int fd, void*, ssize_t);
int sys$getcwd(char*, ssize_t);
int sys$chdir(const char*);
int sys$chdir(const char*, size_t);
int sys$fchdir(int fd);
int sys$sleep(unsigned seconds);
int sys$usleep(useconds_t usec);

2
Libraries/LibC/unistd.cpp
View file

@ -245,7 +245,7 @@ int fstat(int fd, struct stat* statbuf)
int chdir(const char* path)
{
int rc = syscall(SC_chdir, path);
int rc = syscall(SC_chdir, path, strlen(path));
__RETURN_WITH_ERRNO(rc, rc, -1);
}