Date: Mon, 4 Aug 2014 16:32:08 +0000 (UTC) From: Steven Hartland <smh@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r269522 - head/usr.sbin/jail Message-ID: <53dfb588.5ace.5a8acca5@svn.freebsd.org>
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Author: smh Date: Mon Aug 4 16:32:08 2014 New Revision: 269522 URL: http://svnweb.freebsd.org/changeset/base/269522 Log: Added support for extra ifconfig args to jail ip4.addr & ip6.addr params This allows for CARP interfaces to be used in jails e.g. ip4.addr = "em0|10.10.1.20/32 vhid 1 pass MyPass advskew 100" Before this change using exec.prestart to configure a CARP address would result in the wrong MAC being broadcast on startup as jail creates IP aliases to support ip[4|6].addr before exec.prestart is executed. PR: 191832 Reviewed by: jamie MFC after: 1 week X-MFC-With: r269340 Phabric: D528 Sponsored by: Multiplay Modified: head/usr.sbin/jail/command.c head/usr.sbin/jail/config.c head/usr.sbin/jail/jail.8 Modified: head/usr.sbin/jail/command.c ============================================================================== --- head/usr.sbin/jail/command.c Mon Aug 4 15:36:23 2014 (r269521) +++ head/usr.sbin/jail/command.c Mon Aug 4 16:32:08 2014 (r269522) @@ -268,7 +268,7 @@ run_command(struct cfjail *j) pid_t pid; int argc, bg, clean, consfd, down, fib, i, injail, sjuser, timeout; #if defined(INET) || defined(INET6) - char *addr; + char *addr, *extrap, *p, *val; #endif static char *cleanenv; @@ -317,16 +317,30 @@ run_command(struct cfjail *j) switch (comparam) { #ifdef INET case IP__IP4_IFADDR: - argv = alloca(8 * sizeof(char *)); + argc = 0; + val = alloca(strlen(comstring->s) + 1); + strcpy(val, comstring->s); + cs = val; + extrap = NULL; + while ((p = strchr(cs, ' ')) != NULL && strlen(p) > 1) { + if (extrap == NULL) { + *p = '\0'; + extrap = p + 1; + } + cs = p + 1; + argc++; + } + + argv = alloca((8 + argc) * sizeof(char *)); *(const char **)&argv[0] = _PATH_IFCONFIG; - if ((cs = strchr(comstring->s, '|'))) { - argv[1] = alloca(cs - comstring->s + 1); - strlcpy(argv[1], comstring->s, cs - comstring->s + 1); + if ((cs = strchr(val, '|'))) { + argv[1] = alloca(cs - val + 1); + strlcpy(argv[1], val, cs - val + 1); addr = cs + 1; } else { *(const char **)&argv[1] = string_param(j->intparams[IP_INTERFACE]); - addr = comstring->s; + addr = val; } *(const char **)&argv[2] = "inet"; if (!(cs = strchr(addr, '/'))) { @@ -344,6 +358,15 @@ run_command(struct cfjail *j) argv[3] = addr; argc = 4; } + + if (!down) { + for (cs = strtok(extrap, " "); cs; cs = strtok(NULL, " ")) { + size_t len = strlen(cs) + 1; + argv[argc] = alloca(len); + strlcpy(argv[argc++], cs, len); + } + } + *(const char **)&argv[argc] = down ? "-alias" : "alias"; argv[argc + 1] = NULL; break; @@ -351,16 +374,30 @@ run_command(struct cfjail *j) #ifdef INET6 case IP__IP6_IFADDR: - argv = alloca(8 * sizeof(char *)); + argc = 0; + val = alloca(strlen(comstring->s) + 1); + strcpy(val, comstring->s); + cs = val; + extrap = NULL; + while ((p = strchr(cs, ' ')) != NULL && strlen(p) > 1) { + if (extrap == NULL) { + *p = '\0'; + extrap = p + 1; + } + cs = p + 1; + argc++; + } + + argv = alloca((8 + argc) * sizeof(char *)); *(const char **)&argv[0] = _PATH_IFCONFIG; - if ((cs = strchr(comstring->s, '|'))) { - argv[1] = alloca(cs - comstring->s + 1); - strlcpy(argv[1], comstring->s, cs - comstring->s + 1); + if ((cs = strchr(val, '|'))) { + argv[1] = alloca(cs - val + 1); + strlcpy(argv[1], val, cs - val + 1); addr = cs + 1; } else { *(const char **)&argv[1] = string_param(j->intparams[IP_INTERFACE]); - addr = comstring->s; + addr = val; } *(const char **)&argv[2] = "inet6"; argv[3] = addr; @@ -370,6 +407,15 @@ run_command(struct cfjail *j) argc = 6; } else argc = 4; + + if (!down) { + for (cs = strtok(extrap, " "); cs; cs = strtok(NULL, " ")) { + size_t len = strlen(cs) + 1; + argv[argc] = alloca(len); + strlcpy(argv[argc++], cs, len); + } + } + *(const char **)&argv[argc] = down ? "-alias" : "alias"; argv[argc + 1] = NULL; break; Modified: head/usr.sbin/jail/config.c ============================================================================== --- head/usr.sbin/jail/config.c Mon Aug 4 15:36:23 2014 (r269521) +++ head/usr.sbin/jail/config.c Mon Aug 4 16:32:08 2014 (r269522) @@ -576,7 +576,9 @@ check_intparams(struct cfjail *j) /* * IP addresses may include an interface to set that address on, - * and a netmask/suffix for that address. + * a netmask/suffix for that address and options for ifconfig. + * These are copied to an internal command parameter and then stripped + * so they won't be passed on to jailparam_set. */ defif = string_param(j->intparams[IP_INTERFACE]) != NULL; #ifdef INET @@ -601,6 +603,10 @@ check_intparams(struct cfjail *j) *cs = '\0'; s->len = cs - s->s; } + if ((cs = strchr(s->s, ' ')) != NULL) { + *cs = '\0'; + s->len = cs - s->s; + } } } #endif @@ -625,6 +631,10 @@ check_intparams(struct cfjail *j) *cs = '\0'; s->len = cs - s->s; } + if ((cs = strchr(s->s, ' ')) != NULL) { + *cs = '\0'; + s->len = cs - s->s; + } } } #endif Modified: head/usr.sbin/jail/jail.8 ============================================================================== --- head/usr.sbin/jail/jail.8 Mon Aug 4 15:36:23 2014 (r269521) +++ head/usr.sbin/jail/jail.8 Mon Aug 4 16:32:08 2014 (r269522) @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 10, 2014 +.Dd August 4, 2014 .Dt JAIL 8 .Os .Sh NAME @@ -687,18 +687,24 @@ jail is created, and will be removed fro jail is removed. .It Va ip4.addr In addition to the IP addresses that are passed to the kernel, an -interface and/or a netmask may also be specified, in the form -.Dq Ar interface Ns | Ns Ar ip-address Ns / Ns Ar netmask . +interface, netmask and additional paramters (as supported by +.Xr ifconfig 8 Ns ) +may also be specified, in the form +.Dq Ar interface Ns | Ns Ar ip-address Ns / Ns Ar netmask param ... . If an interface is given before the IP address, an alias for the address will be added to that interface, as it is with the .Va interface parameter. If a netmask in either dotted-quad or CIDR form is given after an IP address, it will be used when adding the IP alias. +If additional parameters are specified then they will also be used when +adding the IP alias. .It Va ip6.addr In addition to the IP addresses that are passed to the kernel, -an interface and/or a prefix may also be specified, in the form -.Dq Ar interface Ns | Ns Ar ip-address Ns / Ns Ar prefix . +an interface, prefix and additional parameters (as supported by +.Xr ifconfig 8 Ns ) +may also be specified, in the form +.Dq Ar interface Ns | Ns Ar ip-address Ns / Ns Ar prefix param ... . .It Va vnet.interface A network interface to give to a vnet-enabled jail after is it created. The interface will automatically be released when the jail is removed. @@ -1177,6 +1183,7 @@ environment of the first jail. .Xr pkill 1 , .Xr ps 1 , .Xr quota 1 , +.Xr ifconfig 8 , .Xr jail_set 2 , .Xr devfs 5 , .Xr fdescfs 5 ,
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