GNU bug report logs - #10305
coreutils-8.14, "rm -r" fails with EBADF

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From: Pádraig Brady <P <at> draigBrady.com>
To: Joachim Schmitz <jojo <at> schmitz-digital.de>
Cc: 10305 <at> debbugs.gnu.org, bug-gnulib <at> gnu.org
Subject: bug#10305: coreutils-8.21, some changes needed
Date: Tue, 19 Feb 2013 10:28:37 +0000

On 02/19/2013 09:08 AM, Joachim Schmitz wrote:
>> -----Original Message-----
>> From: Joachim Schmitz [mailto:jojo <at> schmitz-digital.de]
>> Sent: Tuesday, February 19, 2013 9:18 AM
>> To: '10305 <at> debbugs.gnu.org'; 'bug-gnulib <at> gnu.org'
>> Subject: coreutils-8.21, some changes needed
>>
>> Hi folks
>>
>> In an attempt to port coreutils 8.21 to HP-NonStop I stumbled accross a couple problems, here are my fixes to them:
>>
>> Here another file needs to get adjusted to using the new root-uid.h
>>
>> diff -EBbu ./src/copy.c.orig ./src/copy.c
>> --- ./src/copy.c.orig   2013-02-07 03:37:05 -0600
>> +++ ./src/copy.c        2013-02-18 09:29:22 -0600
>> @@ -51,6 +51,7 @@
>>   #include "ignore-value.h"
>>   #include "ioblksize.h"
>>   #include "quote.h"
>> +#include "root-uid.h"
>>   #include "same.h"
>>   #include "savedir.h"
>>   #include "stat-size.h"
>> @@ -1127,7 +1128,7 @@
>>       {
>>         bool access_changed = false;
>>
>> -      if (!(sb.st_mode & S_IWUSR) && geteuid () != 0)
>> +      if (!(sb.st_mode & S_IWUSR) && geteuid () != ROOT_UID)
>>           access_changed = fchmod_or_lchmod (dest_desc, dst_name, 0600) == 0;
>>
>>         if (!copy_attr (src_name, source_desc, dst_name, dest_desc, x)
>> @@ -2718,7 +2719,7 @@
>>       priv_freeset (pset);
>>     }
>>   #else
>> -  x->chown_privileges = x->owner_privileges = (geteuid () == 0);
>> +  x->chown_privileges = x->owner_privileges = (geteuid () == ROOT_UID);
>>   #endif
>>   }

I'll apply this in your name.

>> On HP-NonStop we use  0x80000000 instead of -1 for getuid(), getgid() and friends to indicate NO_UID rsp. NO_GID
>> Guess that difference could go into gnulibs root-uid.h?

You could wrap get[gu]id() to return -1 in that case,
or alternatively define NO_UID and NO_GID in root-uid.h
and use that everywhere. Probably the easiest approach
for coreutils at least since it already users NO_GID since:
http://bugs.gnu.org/10021
Though I note that root-uid.h would be an inaccurate
name if we did that.

BTW, Is 0 a valid "non root" user id on nonstop?
If not then we could use the wrapper approach to
hide the ROOT_UID issue also.

In the meantime we should at least document these differences
in gnulib in doc/posix-functions/getuid.texi.

>> Such a change would affect coreutils in ...src/{groups,id,install,test,whoami}.c (in addition to root-uid.h of course)
>>

>> Here two trailing _ seem missing?
>>
>> diff -EBbu ./src/numfmt.c.orig ./src/numfmt.c
>> --- ./src/numfmt.c.orig 2013-02-14 08:49:30 -0600
>> +++ ./src/numfmt.c      2013-02-18 10:58:27 -0600
>> @@ -1195,7 +1195,7 @@
>>      Returns a pointer to the *delimiter* of the requested field,
>>      or a pointer to NUL (if reached the end of the string).  */
>>   static inline char *
>> -__attribute ((pure))
>> +__attribute__ ((pure))

Oops. I'll fix this up with a more extensive patch in coreutils.

Thanks,
Pádraig.

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