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hurd: Support AT_EMPTY_PATH 

* hurd/lookup-at.c (__file_name_lookup_at): When at_flags contains
	AT_EMPTY_PATH, call __dir_lookup and __hurd_file_name_lookup_retry
	directly instead of __hurd_file_name_lookup.
This commit is contained in:
Samuel Thibault 2019-01-22 23:38:36 +01:00
parent a95dc01c9e
commit ee4d79026d
2 changed files with 23 additions and 0 deletions
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3
ChangeLog
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@ -2,6 +2,9 @@
* sysdeps/mach/hurd/faccessat.c (__faccessat_common): Check for errors
returned by __hurd_at_flags.
* hurd/lookup-at.c (__file_name_lookup_at): When at_flags contains
AT_EMPTY_PATH, call __dir_lookup and __hurd_file_name_lookup_retry
directly instead of __hurd_file_name_lookup.
2019-01-21 Joseph Myers <joseph@codesourcery.com>

20
hurd/lookup-at.c
View File

@ -28,6 +28,9 @@ __file_name_lookup_at (int fd, int at_flags,
{
error_t err;
file_t result;
int empty = at_flags & AT_EMPTY_PATH;
at_flags &= ~AT_EMPTY_PATH;
err = __hurd_at_flags (&at_flags, &flags);
if (err)
@ -36,6 +39,23 @@ __file_name_lookup_at (int fd, int at_flags,
if (fd == AT_FDCWD || file_name[0] == '/')
return __file_name_lookup (file_name, flags, mode);
if (empty != 0 && file_name[0] == '\0')
{
enum retry_type doretry;
char retryname[1024]; /* XXX string_t LOSES! */
err = HURD_DPORT_USE (fd, __dir_lookup (port, "", flags, mode,
&doretry, retryname,
&result));
if (! err)
err = __hurd_file_name_lookup_retry (&_hurd_ports_use, &__getdport,
NULL, doretry, retryname,
flags, mode, &result);
return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
}
file_t startdir;
error_t use_init_port (int which, error_t (*operate) (mach_port_t))
{