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| author | mdodd <mdodd@FreeBSD.org> | 2002-08-04 01:07:02 +0000 |
|---|---|---|
| committer | mdodd <mdodd@FreeBSD.org> | 2002-08-04 01:07:02 +0000 |
| commit | e327abdb5fe6f6022bec2eac7491975d34fa77d2 (patch) | |
| tree | 0c828d394785fe576b10f2b478555ce28231defa /sys | |
| parent | 65f8611398fde0becef8e3b6adea757da2411823 (diff) | |
| download | FreeBSD-src-e327abdb5fe6f6022bec2eac7491975d34fa77d2.zip FreeBSD-src-e327abdb5fe6f6022bec2eac7491975d34fa77d2.tar.gz | |
Kernel modifications necessary to allow to follow fork()ed children.
PR: bin/25587 (in part)
MFC after: 3 weeks
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/kern_fork.c | 10 | ||||
| -rw-r--r-- | sys/sys/pioctl.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index bf09ff8..bf8f6fb 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -51,6 +51,7 @@ #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/proc.h> +#include <sys/pioctl.h> #include <sys/resourcevar.h> #include <sys/syscall.h> #include <sys/vnode.h> @@ -758,6 +759,15 @@ again: PROC_UNLOCK(p2); /* + * If PF_FORK is set, the child process inherits the + * procfs ioctl flags from its parent. + */ + if (p1->p_pfsflags & PF_FORK) { + p2->p_stops = p1->p_stops; + p2->p_pfsflags = p1->p_pfsflags; + } + + /* * Return child proc pointer to parent. */ *procp = p2; diff --git a/sys/sys/pioctl.h b/sys/sys/pioctl.h index b7a2cea..497bf27 100644 --- a/sys/sys/pioctl.h +++ b/sys/sys/pioctl.h @@ -75,4 +75,5 @@ struct procfs_status { # define PF_LINGER 0x01 /* Keep stops around after last close */ # define PF_ISUGID 0x02 /* Ignore UID/GID changes */ +# define PF_FORK 0x04 /* Retain settings on fork() */ #endif |
