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83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
#include <string.h>
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#include <sys/stat.h>
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#include <limits.h>
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#include "kernel/calls.h"
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#include "kernel/errno.h"
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#include "kernel/fs.h"
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struct newstat64 stat_convert_newstat64(struct statbuf stat) {
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struct newstat64 newstat;
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newstat.dev = stat.dev;
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newstat.fucked_ino = stat.inode;
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newstat.ino = stat.inode;
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newstat.mode = stat.mode;
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newstat.nlink = stat.nlink;
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newstat.uid = stat.uid;
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newstat.gid = stat.gid;
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newstat.rdev = stat.rdev;
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newstat.size = stat.size;
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newstat.blksize = stat.blksize;
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newstat.blocks = stat.blocks;
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newstat.atime = stat.atime;
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newstat.atime_nsec = stat.atime_nsec;
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newstat.mtime = stat.mtime;
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newstat.mtime_nsec = stat.mtime_nsec;
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newstat.ctime = stat.ctime;
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newstat.ctime_nsec = stat.ctime_nsec;
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return newstat;
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}
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int generic_statat(struct fd *at, const char *path_raw, struct statbuf *stat, bool follow_links) {
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char path[MAX_PATH];
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int err = path_normalize(at, path_raw, path, follow_links);
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if (err < 0)
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return err;
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struct mount *mount = find_mount_and_trim_path(path);
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return mount->fs->stat(mount, path, stat, follow_links);
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}
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static dword_t sys_stat_path(fd_t at_f, addr_t path_addr, addr_t statbuf_addr, bool follow_links) {
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int err;
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char path[MAX_PATH];
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if (user_read_string(path_addr, path, sizeof(path)))
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return _EFAULT;
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struct fd *at = at_fd(at_f);
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if (at == NULL)
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return _EBADF;
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struct statbuf stat;
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if ((err = generic_statat(at, path, &stat, follow_links)) < 0)
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return err;
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struct newstat64 newstat = stat_convert_newstat64(stat);
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if (user_put(statbuf_addr, newstat))
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return _EFAULT;
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return 0;
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}
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dword_t sys_stat64(addr_t path_addr, addr_t statbuf_addr) {
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return sys_stat_path(AT_FDCWD_, path_addr, statbuf_addr, true);
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}
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dword_t sys_lstat64(addr_t path_addr, addr_t statbuf_addr) {
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return sys_stat_path(AT_FDCWD_, path_addr, statbuf_addr, false);
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}
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dword_t sys_fstatat64(fd_t at, addr_t path_addr, addr_t statbuf_addr, dword_t flags) {
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return sys_stat_path(at, path_addr, statbuf_addr, !(flags & AT_SYMLINK_NOFOLLOW_));
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}
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dword_t sys_fstat64(fd_t fd_no, addr_t statbuf_addr) {
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STRACE("fstat64(%d, 0x%x)", fd_no, statbuf_addr);
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struct fd *fd = current->files[fd_no];
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if (fd == NULL)
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return _EBADF;
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struct statbuf stat;
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int err = fd->mount->fs->fstat(fd, &stat);
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if (err < 0)
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return err;
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struct newstat64 newstat = stat_convert_newstat64(stat);
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if (user_put(statbuf_addr, newstat))
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return _EFAULT;
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return 0;
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}
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