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| -rw-r--r-- | man7/pid_namespaces.7 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/man7/pid_namespaces.7 b/man7/pid_namespaces.7 index 5e49633cc2..b1a40f1f96 100644 --- a/man7/pid_namespaces.7 +++ b/man7/pid_namespaces.7 @@ -234,6 +234,13 @@ then it isn't necessary to change the root directory: a new procfs instance can be mounted directly over .IR /proc .) +Calling +.BR readlink (2) +on the path +.I /proc/self +yields the process ID of the caller in the PID namespace of the procfs mount +(i.e., the PID namespace of the process that mounted the procfs). + When a process ID is passed over a UNIX domain socket to a process in a different PID namespace (see the description of .B SCM_CREDENTIALS |