Date: Fri, 23 Mar 2012 20:05:41 +0000 (UTC) From: Mikolaj Golub <trociny@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r233389 - in head/sys: kern sys Message-ID: <201203232005.q2NK5fEB091987@svn.freebsd.org>
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Author: trociny Date: Fri Mar 23 20:05:41 2012 New Revision: 233389 URL: http://svn.freebsd.org/changeset/base/233389 Log: Add a sysctl to set and retrieve binary osreldate of another process. Suggested by: kib Reviewed by: kib MFC after: 2 weeks Modified: head/sys/kern/kern_proc.c head/sys/sys/sysctl.h Modified: head/sys/kern/kern_proc.c ============================================================================== --- head/sys/kern/kern_proc.c Fri Mar 23 19:37:45 2012 (r233388) +++ head/sys/kern/kern_proc.c Fri Mar 23 20:05:41 2012 (r233389) @@ -2499,6 +2499,52 @@ sysctl_kern_proc_umask(SYSCTL_HANDLER_AR return (error); } +/* + * This sysctl allows a process to set and retrieve binary osreldate of + * another process. + */ +static int +sysctl_kern_proc_osrel(SYSCTL_HANDLER_ARGS) +{ + int *name = (int *)arg1; + u_int namelen = arg2; + struct proc *p; + int flags, error, osrel; + + if (namelen != 1) + return (EINVAL); + + if (req->newptr != NULL && req->newlen != sizeof(osrel)) + return (EINVAL); + + flags = PGET_HOLD | PGET_NOTWEXIT; + if (req->newptr != NULL) + flags |= PGET_CANDEBUG; + else + flags |= PGET_CANSEE; + error = pget((pid_t)name[0], flags, &p); + if (error != 0) + return (error); + + error = SYSCTL_OUT(req, &p->p_osrel, sizeof(p->p_osrel)); + if (error != 0) + goto errout; + + if (req->newptr != NULL) { + error = SYSCTL_IN(req, &osrel, sizeof(osrel)); + if (error != 0) + goto errout; + if (osrel < 0) { + error = EINVAL; + goto errout; + } + p->p_osrel = osrel; + } +errout: + PRELE(p); + return (error); +} + SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD, 0, "Process table"); SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLFLAG_RD|CTLTYPE_STRUCT| @@ -2603,3 +2649,7 @@ static SYSCTL_NODE(_kern_proc, KERN_PROC static SYSCTL_NODE(_kern_proc, KERN_PROC_UMASK, umask, CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc_umask, "Process umask"); + +static SYSCTL_NODE(_kern_proc, KERN_PROC_OSREL, osrel, CTLFLAG_RW | + CTLFLAG_ANYBODY | CTLFLAG_MPSAFE, sysctl_kern_proc_osrel, + "Process binary osreldate"); Modified: head/sys/sys/sysctl.h ============================================================================== --- head/sys/sys/sysctl.h Fri Mar 23 19:37:45 2012 (r233388) +++ head/sys/sys/sysctl.h Fri Mar 23 20:05:41 2012 (r233389) @@ -565,6 +565,7 @@ SYSCTL_ALLOWED_TYPES(UINT64, uint64_t *a #define KERN_PROC_RLIMIT 37 /* process resource limits */ #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */ #define KERN_PROC_UMASK 39 /* process umask */ +#define KERN_PROC_OSREL 40 /* osreldate for process binary */ /* * KERN_IPC identifiers
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