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1999-03-14 Roland McGrath <roland@baalperazim.frob.com> 

* hurd/hurdlookup.c (__hurd_file_name_lookup_retry): Under O_NOFOLLOW, 
check for root-owned symlinks and reject them too.
This commit is contained in:
Roland McGrath 1999-03-14 12:59:57 +00:00
parent 91ea72b7d2
commit 8ea6a7aa50
1 changed files with 18 additions and 2 deletions
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20
hurd/hurdlookup.c
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@ -23,6 +23,7 @@
#include <fcntl.h> #include <fcntl.h>
#include "stdio-common/_itoa.h" #include "stdio-common/_itoa.h"
#include <hurd/term.h> #include <hurd/term.h>
#include <hurd/paths.h>
/* Translate the error from dir_lookup into the error the user sees. */ /* Translate the error from dir_lookup into the error the user sees. */
@ -197,9 +198,24 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port)
struct stat st; struct stat st;
err = __io_stat (*result, &st); err = __io_stat (*result, &st);
if (!err if (!err
&& st.st_uid != 0
&& (st.st_mode & (S_IPTRANS|S_IATRANS))) && (st.st_mode & (S_IPTRANS|S_IATRANS)))
err = ENOENT; {
if (st.st_uid != 0)
err = ENOENT;
else if (st.st_mode & S_IPTRANS)
{
char buf[1024];
char *trans = buf;
size_t translen = sizeof buf;
err = __file_get_translator (*result,
&trans, &translen);
if (!err
&& translen > sizeof _HURD_SYMLINK
&& !memcmp (trans,
_HURD_SYMLINK, sizeof _HURD_SYMLINK))
err = ENOENT;
}
}
} }
/* We got a successful translation. Now apply any open-time /* We got a successful translation. Now apply any open-time