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SubjectRe: /bin/ls: cannot read symbolic link /proc/$$/exe: Permission denied
 On Mon, Aug 16, Olaf Hering wrote:

>
> For some reasons ls -l /proc/$$/exe doesnt work all time for me,
> with 2.6.8.1 on ppc64. Sometimes it does, sometimes not. No pattern.
> A few printks show that this check in proc_pid_readlink() triggers
> an -EACCES:
>
> current->fsuid != inode->i_uid
>
> proc_pid_readlink(755) error -13 ntptrace(11408) fsuid 100 i_uid 0 0
> sys_readlink(281) ntptrace(11408) error -13 readlink

A better one, clear both new fields, just in case.


diff -p -purN linux-2.6.8.1.omfg/fs/compat.c linux-2.6.8.1/fs/compat.c
--- linux-2.6.8.1.omfg/fs/compat.c 2004-08-14 12:55:31.000000000 +0200
+++ linux-2.6.8.1/fs/compat.c 2004-08-17 00:33:36.000000000 +0200
@@ -1390,6 +1390,8 @@ int compat_do_execve(char * filename,
bprm.sh_bang = 0;
bprm.loader = 0;
bprm.exec = 0;
+ bprm.interp_flags = 0;
+ bprm.interp_data = 0;
bprm.security = NULL;
bprm.mm = mm_alloc();
retval = -ENOMEM;
--
USB is for mice, FireWire is for men!

sUse lINUX ag, nÜRNBERG
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