Re: Help! I can't even execute my own executables any more!
On Tuesday 23 May 2006 10:11, hendrik@topoi.pooq.com wrote:
> A program I wrote and has run many many times before suddenly stopped
> running, giving "permission denied" errors. Thinking this ight have to
> to with the recent C++ library changes, I recompiled it. But this did
> not help. I decided to strace, and get a clue what it might be trying
> to do:
>
> hendrik@lovesong:~/dv/txt$ ls -l i686/
> total 184
> -rwxr-xr-x 1 hendrik hendrik 46941 2006-05-08 11:41 mtxt2ps
> -rwxr-xr-x 1 hendrik hendrik 104526 2006-04-25 06:35 parseabw
> -rwxr-xr-x 1 hendrik hendrik 31945 2006-05-23 08:57 txt
> hendrik@lovesong:~/dv/txt$ man strace
> Reformatting strace(1), please wait...
> hendrik@lovesong:~/dv/txt$ strace i686/txt
> execve("i686/txt", ["i686/txt"], [/* 26 vars */]) = -1 EACCES (Permission
> denied) dup(2) = 3
> fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)
> fstat64(3, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
> 0xb7f4f000 _llseek(3, 0, 0xbfa63138, SEEK_CUR) = -1 ESPIPE (Illegal
> seek) write(3, "strace: exec: Permission denied\n", 32strace: exec:
> Permission denied ) = 32
> close(3) = 0
> munmap(0xb7f4f000, 4096) = 0
> exit_group(1) = ?
> Process 8317 detached
> hendrik@lovesong:~/dv/txt$
>
> It looks as if execve is failing to read the executable. But there were
> no compilation errors, and permissions seem to be set correctly.
>
> Does this indicate that I, or my computer, has gone mad?
> Or is there something deep I need to know?
>
> It's an ordinary 32-bit PC, running etch.
>
> -- hendrik
What does the output of 'mount' look like? I've run into this error before
when the partition on which the binary resided was mounted 'noexec'. It can
be maddening until you figure it out! :)
j
--
Joshua Kugler
Lead System Admin -- Senior Programmer
http://www.eeinternet.com
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PO Box 80086 -- Fairbanks, AK 99708 -- Ph: 907-456-5581 Fax: 907-456-3111
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