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feat(userspace/libc): implement brk(), chdir() and getcwd()

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2
2025-03-21 02:01:57 +00:00
parent 36bb7b7a88
commit 7087ce7ec5
5 changed files with 53 additions and 9 deletions
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9
Userspace/libc/src/std/fcntl.c
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@ -25,7 +25,14 @@
export int creat(const char *path, mode_t mode) { return open(path, O_WRONLY | O_CREAT | O_TRUNC, mode); }
export int fcntl(int fildes, int cmd, ...);
export int fcntl(int fildes, int cmd, ...)
{
va_list args;
va_start(args, cmd);
void *arg = va_arg(args, void *);
va_end(args);
return __check_errno(sysdep(FileControl)(fildes, cmd, arg), -1);
}
export int open(const char *path, int oflag, ...)
{

21
Userspace/libc/src/std/unistd.c
View File

@ -40,8 +40,16 @@ export unsigned int alarm(unsigned int seconds)
return __check_errno(-ENOSYS, -1);
}
export int brk(void *);
export int chdir(const char *);
export int brk(void *addr)
{
return __check_errno(sysdep(Brk)(addr), -1);
}
export int chdir(const char *path)
{
return __check_errno(sysdep(ChangeDirectory)(path), -1);
}
export int chroot(const char *);
export int chown(const char *, uid_t, gid_t);
@ -176,7 +184,12 @@ export pid_t fork(void)
export long int fpathconf(int, int);
export int fsync(int);
export int ftruncate(int, off_t);
export char *getcwd(char *, size_t);
export char *getcwd(char *buf, size_t size)
{
return (char *)__check_errno((__iptr)sysdep(GetWorkingDirectory)(buf, size), (__iptr)NULL);
}
export int getdtablesize(void);
export gid_t getegid(void);
export uid_t geteuid(void);
@ -281,7 +294,7 @@ export ssize_t read(int fildes, void *buf, size_t nbyte)
export int readlink(const char *, char *, size_t);
export int rmdir(const char *);
export void *sbrk(intptr_t);
export void *sbrk(intptr_t incr);
export int setgid(gid_t);
export int setpgid(pid_t, pid_t);
export pid_t setpgrp(void);