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| author | Malte Nuhn <nuhn@physik.rwth-aachen.de> | 2009-05-08 12:20:33 -0400 |
|---|---|---|
| committer | Frank Ch. Eigler <fche@elastic.org> | 2009-05-08 12:20:33 -0400 |
| commit | e361ac2bdb6f1996e020a5612cec71762b556e25 (patch) | |
| tree | df4cb5075d375b7e698fb8317d753adaa6bb5b97 /tapset | |
| parent | 07f8225311f85de5754bb594bf6ee945425dafcc (diff) | |
| download | systemtap-steved-e361ac2bdb6f1996e020a5612cec71762b556e25.tar.gz systemtap-steved-e361ac2bdb6f1996e020a5612cec71762b556e25.tar.xz systemtap-steved-e361ac2bdb6f1996e020a5612cec71762b556e25.zip | |
context tapset: sid() function to return task session leader pid
Diffstat (limited to 'tapset')
| -rw-r--r-- | tapset/context.stp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tapset/context.stp b/tapset/context.stp index fcb60201..5d855f80 100644 --- a/tapset/context.stp +++ b/tapset/context.stp @@ -64,6 +64,18 @@ function ppid:long () %{ /* pure */ %} /** + * sfunction sid - Returns the session ID of the current process. + * + * The session ID of a process is the process group ID of the session + * leader. Session ID is stored in the signal_struct since Kernel 2.6.0. + */ +function sid:long () %{ /* pure */ + struct signal_struct *ss = kread( &(current->signal) ); + THIS->__retvalue = kread ( &(ss->session) ); + CATCH_DEREF_FAULT(); +%} + +/** * sfunction pexecname - Returns the execname of a target process's parent process. */ function pexecname:string () %{ /* pure */ |