mirrors/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-04-21 03:55:24 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

Kernel: Implement fchdir syscall

Browse source 
The fchdir() function is equivalent to chdir() except that the
directory that is to be the new current working directory is
specified by a file descriptor.
This commit is contained in:
Mauri de Souza Nunes 2019-09-11 20:18:25 -03:00 • committed by Andreas Kling
parent 26e81ad574
commit 7d85fc00e4
Notes: sideshowbarker 2024-07-19 12:08:12 +09:00
6 changed files with 24 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
Kernel/Process.cpp
View file

@ -1202,6 +1202,19 @@ int Process::sys$chdir(const char* path)
return 0;
}
int Process::sys$fchdir(int fd)
{
auto* description = file_description(fd);
if (!description)
return -EBADF;
if (!description->is_directory())
return -ENOTDIR;
m_cwd = description->custody();
return 0;
}
int Process::sys$getcwd(char* buffer, ssize_t size)
{
if (size < 0)

1
Kernel/Process.h
View file

@ -152,6 +152,7 @@ public:
ssize_t sys$get_dir_entries(int fd, void*, ssize_t);
int sys$getcwd(char*, ssize_t);
int sys$chdir(const char*);
int sys$fchdir(int fd);
int sys$sleep(unsigned seconds);
int sys$usleep(useconds_t usec);
int sys$gettimeofday(timeval*);

2
Kernel/Syscall.cpp
View file

@ -136,6 +136,8 @@ static u32 handle(RegisterDump& regs, u32 function, u32 arg1, u32 arg2, u32 arg3
break;
case Syscall::SC_chdir:
return current->process().sys$chdir((const char*)arg1);
case Syscall::SC_fchdir:
return current->process().sys$fchdir((int)arg1);
case Syscall::SC_uname:
return current->process().sys$uname((utsname*)arg1);
case Syscall::SC_set_mmap_name:

1
Kernel/Syscall.h
View file

@ -32,6 +32,7 @@ struct timeval;
__ENUMERATE_SYSCALL(gettimeofday) \
__ENUMERATE_SYSCALL(gethostname) \
__ENUMERATE_SYSCALL(chdir) \
__ENUMERATE_SYSCALL(fchdir) \
__ENUMERATE_SYSCALL(uname) \
__ENUMERATE_SYSCALL(set_mmap_name) \
__ENUMERATE_SYSCALL(readlink) \

6
Libraries/LibC/unistd.cpp
View file

@ -265,6 +265,12 @@ int chdir(const char* path)
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int fchdir(int fd)
{
int rc = syscall(SC_fchdir, fd);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
char* getcwd(char* buffer, size_t size)
{
if (!buffer) {

1
Libraries/LibC/unistd.h
View file

@ -68,6 +68,7 @@ int close(int fd);
pid_t waitpid(pid_t, int* wstatus, int options);
pid_t wait(int* wstatus);
int chdir(const char* path);
int fchdir(int fd);
char* getcwd(char* buffer, size_t size);
char* getwd(char* buffer);
int fstat(int fd, struct stat* statbuf);