Welcome to The Fiwix Project
A UNIX-like kernel for the i386 architecture
1 /* 2 * fiwix/kernel/syscalls/lstat.c 3 * 4 * Copyright 2018, Jordi Sanfeliu. All rights reserved. 5 * Distributed under the terms of the Fiwix License. 6 */ 7 8 #include <fiwix/fs.h> 9 #include <fiwix/stat.h> 10 #include <fiwix/string.h> 11 12 #ifdef __DEBUG__ 13 #include <fiwix/stdio.h> 14 #include <fiwix/process.h> 15 #endif /*__DEBUG__ */ 16 17 int sys_lstat(const char *filename, struct old_stat *statbuf) 18 { 19 struct inode *i; 20 char *tmp_name; 21 int errno; 22 23 #ifdef __DEBUG__ 24 printk("(pid %d) sys_lstat('%s', 0x%08x) -> returning structure\n", current->pid, filename, (unsigned int )statbuf); 25 #endif /*__DEBUG__ */ 26 27 if((errno = check_user_area(VERIFY_WRITE, statbuf, sizeof(struct old_stat)))) { 28 return errno; 29 } 30 if((errno = malloc_name(filename, &tmp_name)) < 0) { 31 return errno; 32 } 33 if((errno = namei(tmp_name, &i, NULL, !FOLLOW_LINKS))) { 34 free_name(tmp_name); 35 return errno; 36 } 37 statbuf->st_dev = i->dev; 38 statbuf->st_ino = i->inode; 39 statbuf->st_mode = i->i_mode; 40 statbuf->st_nlink = i->i_nlink; 41 statbuf->st_uid = i->i_uid; 42 statbuf->st_gid = i->i_gid; 43 statbuf->st_rdev = i->rdev; 44 statbuf->st_size = i->i_size; 45 statbuf->st_atime = i->i_atime; 46 statbuf->st_mtime = i->i_mtime; 47 statbuf->st_ctime = i->i_ctime; 48 iput(i); 49 free_name(tmp_name); 50 return 0; 51 }