error_t err;
file_t file_stat;
struct stat64 st;
+ enum retry_type doretry;
+ char retryname[1024];
+ file_t file;
+ char *rbuf = buf;
file_stat = __file_name_lookup_at (fd, 0, file_name, O_NOLINK, 0);
if (file_stat == MACH_PORT_NULL)
return -1;
err = __io_stat (file_stat, &st);
- if (! err)
- if (S_ISLNK (st.st_mode))
- {
- enum retry_type doretry;
- char retryname[1024];
- file_t file;
- char *rbuf = buf;
+ if (err)
+ goto out;
+ if (!S_ISLNK (st.st_mode))
+ {
+ err = EINVAL;
+ goto out;
+ }
- err = __dir_lookup (file_stat, "", O_READ | O_NOLINK, 0, &doretry, retryname, &file);
- if (! err && (doretry != FS_RETRY_NORMAL || retryname[0] != '\0'))
- err = EGRATUITOUS;
- if (! err)
- {
- err = __io_read (file, &rbuf, &len, 0, len);
- if (!err && rbuf != buf)
- {
- memcpy (buf, rbuf, len);
- __vm_deallocate (__mach_task_self (), (vm_address_t)rbuf, len);
- }
+ err = __dir_lookup (file_stat, "", O_READ | O_NOLINK,
+ 0, &doretry, retryname, &file);
+ if (err)
+ goto out;
+ if (doretry != FS_RETRY_NORMAL || retryname[0] != '\0')
+ {
+ err = EGRATUITOUS;
+ goto out;
+ }
+
+ err = __io_read (file, &rbuf, &len, 0, len);
+ __mach_port_deallocate (__mach_task_self (), file);
+ if (err)
+ goto out;
+
+ if (rbuf != buf)
+ {
+ memcpy (buf, rbuf, len);
+ __vm_deallocate (__mach_task_self (), (vm_address_t) rbuf, len);
+ }
- __mach_port_deallocate (__mach_task_self (), file);
- }
- }
- else
- err = EINVAL;
+ out:
__mach_port_deallocate (__mach_task_self (), file_stat);
return err ? __hurd_fail (err) : len;