[Qemu-devel] [PATCH] linux-user: added fake open() for /proc/self/cmdline

[lists]

A piece of software I use depends on /proc/self/cmdline to determine the 
command with which it was invoked.
When using linux-user, that file would read:

        $ hd /proc/self/cmdline 
        00000000  2f 75 73 72 2f 62 69 6e  2f 71 65 6d 75 2d 61 72  
|/usr/bin/qemu-ar|
        00000010  6d 2d 73 74 61 74 69 63  00 2f 75 73 72 2f 62 69  
|m-static./usr/bi|
        00000020  6e 2f 68 64 00 2f 70 72  6f 63 2f 73 65 6c 66 2f  
|n/hd./proc/self/|
        00000030  63 6d 64 6c 69 6e 65 00                           |cmdline.|

With this patch, the first word is omitted from the process's own cmdline 
entry, removing the emulator path from the file:

        $ hd /proc/self/cmdline 
        00000000  2f 75 73 72 2f 62 69 6e  2f 68 64 00 2f 70 72 6f  
|/usr/bin/hd./pro|
        00000010  63 2f 73 65 6c 66 2f 63  6d 64 6c 69 6e 65 00     
|c/self/cmdline.|
        0000001f

Kind regards,

Wim