From owner-svn-src-head@freebsd.org Tue Sep 3 14:07:43 2019 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 9526DDDA8B; Tue, 3 Sep 2019 14:07:25 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46N80X4JVwz4QZj; Tue, 3 Sep 2019 14:07:24 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 1452) id 556E11B5B5; Tue, 3 Sep 2019 14:06:38 +0000 (UTC) X-Original-To: yuripv@localmail.freebsd.org Delivered-To: yuripv@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id D873F1D0DA; 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Tue, 23 Apr 2019 04:07:15 +0000 (UTC) (envelope-from ota@j.email.ne.jp) Received: from mail03.asahi-net.or.jp (mail03.asahi-net.or.jp [202.224.55.15]) by mx1.freebsd.org (Postfix) with ESMTP id DCEA28D983; Tue, 23 Apr 2019 04:07:10 +0000 (UTC) (envelope-from ota@j.email.ne.jp) Received: from rv515.advok.com (pool-72-76-119-135.nwrknj.fios.verizon.net [72.76.119.135]) (Authenticated sender: NR2Y-OOT) by mail03.asahi-net.or.jp (Postfix) with ESMTPSA id 9E3013F49F; Tue, 23 Apr 2019 13:06:57 +0900 (JST) From: Yoshihiro Ota To: Ed Maste Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r346315 - head/lib/libcasper/services/cap_fileargs Message-Id: <20190423000625.d051ac725a82186d1736858b@j.email.ne.jp> In-Reply-To: <201904171602.x3HG2wQq054372@repo.freebsd.org> References: <201904171602.x3HG2wQq054372@repo.freebsd.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; i386-portbld-freebsd12.0) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 392CE8D991 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.97)[-0.975,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] Status: O X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:07:43 -0000 X-Original-Date: Tue, 23 Apr 2019 00:06:25 -0400 X-List-Received-Date: Tue, 03 Sep 2019 14:07:43 -0000 It looks this change is causing 'make xdev TARGET=mips TARGET_ARCH=mips' to fail as the following with HEAD checked out under "/usr/obj/freebsd": cc -O2 -pipe -DWITH_CASPER -I/usr/obj/freebsd/contrib/elftoolchain/libelftc - I/usr/obj/freebsd/contrib/elftoolchain/common -g -MD -MF.depend.strings.o -MTstrings.o -std=gnu99 -Qunused-arguments -c /usr/obj/freebsd/contrib/elftoolchain/strings/strings.c -o strings.o /usr/obj/freebsd/contrib/elftoolchain/strings/strings.c:198:55: error: use of undeclared identifier 'FA_OPEN' fa = fileargs_init(argc, argv, O_RDONLY, 0, &rights, FA_OPEN); ^ 1 error generated. *** [strings.o] Error code 1 It looks #include cannot pick up header files from "lib/libcasper/services/cap_fileargs" Hiro Ed Maste wrote: > Author: emaste > Date: Wed Apr 17 16:02:57 2019 > New Revision: 346315 > URL: https://svnweb.freebsd.org/changeset/base/346315 > > Log: > cap_fileargs: add fileargs_lstat service > > Add fileargs_lstat function to cap_fileargs casper service to be able to > lstat files while in capability mode. It can only lstat files given in > fileargs_init. > > Submitted by: Bora 〓zarslan > Reviewed by: oshogbo, cem (partial) > MFC after: 3 weeks > Relnotes: Yes > Sponsored by: The FreeBSD Foundation > Differential Revision: https://reviews.freebsd.org/D19548 > > Modified: > head/lib/libcasper/services/cap_fileargs/cap_fileargs.3 > head/lib/libcasper/services/cap_fileargs/cap_fileargs.c > head/lib/libcasper/services/cap_fileargs/cap_fileargs.h > > Modified: head/lib/libcasper/services/cap_fileargs/cap_fileargs.3 > ============================================================================== > --- head/lib/libcasper/services/cap_fileargs/cap_fileargs.3 Wed Apr 17 16:00:33 > 2019 (r346314) +++ head/lib/libcasper/services/cap_fileargs/cap_fileargs.3 Wed Apr > 17 16:02:57 2019 (r346315) @@ -24,7 +24,7 @@ > .\" > .\" $FreeBSD$ > .\" > -.Dd November 12, 2018 > +.Dd April 17, 2019 > .Dt CAP_FILEARGS 3 > .Os > .Sh NAME > @@ -33,6 +33,7 @@ > .Nm fileargs_init , > .Nm fileargs_initnv , > .Nm fileargs_free , > +.Nm fileargs_lstat , > .Nm fileargs_open , > .Nm fileargs_fopen > .Nd "library for handling files in capability mode" > @@ -43,9 +44,9 @@ > .In libcasper.h > .In casper/cap_fileargs.h > .Ft "fileargs_t *" > -.Fn fileargs_init "int argc" "char *argv[]" "int flags" "mode_t mode" "cap_rights_t *rightsp" > +.Fn fileargs_init "int argc" "char *argv[]" "int flags" "mode_t mode" "cap_rights_t *rightsp" > "int operations" .Ft "fileargs_t *" > -.Fn fileargs_cinit "cap_channel_t *cas" "int argc" "char *argv[]" "int flags" "mode_t mode" > "cap_rights_t *rightsp" +.Fn fileargs_cinit "cap_channel_t *cas" "int argc" "char *argv[]" "int > flags" "mode_t mode" "cap_rights_t *rightsp" "int operations" .Ft "fileargs_t *" > .Fn fileargs_cinitnv "cap_channel_t *cas" "nvlist_t *limits" > .Ft "fileargs_t *" > @@ -53,6 +54,8 @@ > .Ft "void" > .Fn fileargs_free "fileargs_t *fa" > .Ft "int" > +.Fn fileargs_lstat "fileargs_t *fa" "const char *path" "struct stat *sb" > +.Ft "int" > .Fn fileargs_open "fileargs_t *fa" "const char *name" > .Ft "FILE *" > .Fn fileargs_fopen "fileargs_t *fa" "const char *name" "const char *mode" > @@ -97,6 +100,22 @@ The > argument contains a list of the capability rights which file should be limited to. > For more details of the capability rights see > .Xr cap_rights_init 3 . > +The > +.Fa operations > +argument limits the operations that are available using > +.Nm system.fileargs . > +.Fa operations > +is a combination of: > +.Bl -ohang -offset indent > +.It FA_OPEN > +Allow > +.Fn fileargs_open > +and > +.Fn fileargs_fopen . > +.It FA_LSTAT > +Allow > +.Fn fileargs_lstat . > +.El > .Pp > The function > .Fn fileargs_cinit > @@ -126,6 +145,11 @@ The function handle > .Dv NULL > argument. > .Pp > +The function > +.Fn fileargs_lstat > +is equivalent to > +.Xr lstat 2 . > +.Pp > The functions > .Fn fileargs_open > and > @@ -165,6 +189,15 @@ must contain the > The > .Va mode > argument tells which what mode file should be created. > +.It operations (NV_TYPE_NUMBER) > +The > +.Va operations > +limits the usable operations for > +.Fa system.fileargs . > +The possible values are explained as > +.Va operations > +argument with > +.Fn fileargs_init . > .El > .Pp > The > @@ -201,7 +234,7 @@ argv += optind; > > /* Create capability to the system.fileargs service. */ > fa = fileargs_init(argc, argv, O_RDONLY, 0, > - cap_rights_init(&rights, CAP_READ)); > + cap_rights_init(&rights, CAP_READ), FA_OPEN); > if (fa == NULL) > err(1, "unable to open system.fileargs service"); > > @@ -222,6 +255,7 @@ fileargs_free(fa); > .Ed > .Sh SEE ALSO > .Xr cap_enter 2 , > +.Xr lstat 2 , > .Xr open 2 , > .Xr cap_rights_init 3 , > .Xr err 3 , > > Modified: head/lib/libcasper/services/cap_fileargs/cap_fileargs.c > ============================================================================== > --- head/lib/libcasper/services/cap_fileargs/cap_fileargs.c Wed Apr 17 16:00:33 > 2019 (r346314) +++ head/lib/libcasper/services/cap_fileargs/cap_fileargs.c Wed Apr > 17 16:02:57 2019 (r346315) @@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$"); > #include > #include > #include > +#include > > #include > #include > @@ -59,8 +60,37 @@ struct fileargs { > }; > > static int > -fileargs_get_cache(fileargs_t *fa, const char *name) > +fileargs_get_lstat_cache(fileargs_t *fa, const char *name, struct stat *sb) > { > + const nvlist_t *nvl; > + size_t size; > + const void *buf; > + > + assert(fa != NULL); > + assert(fa->fa_magic == FILEARGS_MAGIC); > + assert(name != NULL); > + > + if (fa->fa_cache == NULL) > + return (-1); > + > + nvl = dnvlist_get_nvlist(fa->fa_cache, name, NULL); > + if (nvl == NULL) > + return (-1); > + > + if (!nvlist_exists_binary(nvl, "stat")) { > + return (-1); > + } > + > + buf = nvlist_get_binary(nvl, "stat", &size); > + assert(size == sizeof(*sb)); > + memcpy(sb, buf, size); > + > + return (0); > +} > + > +static int > +fileargs_get_fd_cache(fileargs_t *fa, const char *name) > +{ > int fd; > const nvlist_t *nvl; > nvlist_t *tnvl; > @@ -80,6 +110,12 @@ fileargs_get_cache(fileargs_t *fa, const char *name) > return (-1); > > tnvl = nvlist_take_nvlist(fa->fa_cache, name); > + > + if (!nvlist_exists_descriptor(tnvl, "fd")) { > + nvlist_destroy(tnvl); > + return (-1); > + } > + > fd = nvlist_take_descriptor(tnvl, "fd"); > nvlist_destroy(tnvl); > > @@ -102,7 +138,7 @@ fileargs_set_cache(fileargs_t *fa, nvlist_t *nvl) > } > > static nvlist_t* > -fileargs_fetch(fileargs_t *fa, const char *name) > +fileargs_fetch(fileargs_t *fa, const char *name, const char *cmd) > { > nvlist_t *nvl; > int serrno; > @@ -111,7 +147,7 @@ fileargs_fetch(fileargs_t *fa, const char *name) > assert(name != NULL); > > nvl = nvlist_create(NV_FLAG_NO_UNIQUE); > - nvlist_add_string(nvl, "cmd", "open"); > + nvlist_add_string(nvl, "cmd", cmd); > nvlist_add_string(nvl, "name", name); > > nvl = cap_xfer_nvlist(fa->fa_chann, nvl); > @@ -130,7 +166,7 @@ fileargs_fetch(fileargs_t *fa, const char *name) > > static nvlist_t * > fileargs_create_limit(int argc, const char * const *argv, int flags, > - mode_t mode, cap_rights_t *rightsp) > + mode_t mode, cap_rights_t *rightsp, int operations) > { > nvlist_t *limits; > int i; > @@ -140,6 +176,7 @@ fileargs_create_limit(int argc, const char * const *ar > return (NULL); > > nvlist_add_number(limits, "flags", flags); > + nvlist_add_number(limits, "operations", operations); > if (rightsp != NULL) { > nvlist_add_binary(limits, "cap_rights", rightsp, > sizeof(*rightsp)); > @@ -172,7 +209,7 @@ fileargs_create(cap_channel_t *chan, int fdflags) > > fileargs_t * > fileargs_init(int argc, char *argv[], int flags, mode_t mode, > - cap_rights_t *rightsp) > + cap_rights_t *rightsp, int operations) > { > nvlist_t *limits; > > @@ -181,7 +218,7 @@ fileargs_init(int argc, char *argv[], int flags, mode_ > } > > limits = fileargs_create_limit(argc, (const char * const *)argv, flags, > - mode, rightsp); > + mode, rightsp, operations); > if (limits == NULL) > return (NULL); > > @@ -190,7 +227,7 @@ fileargs_init(int argc, char *argv[], int flags, mode_ > > fileargs_t * > fileargs_cinit(cap_channel_t *cas, int argc, char *argv[], int flags, > - mode_t mode, cap_rights_t *rightsp) > + mode_t mode, cap_rights_t *rightsp, int operations) > { > nvlist_t *limits; > > @@ -199,7 +236,7 @@ fileargs_cinit(cap_channel_t *cas, int argc, char *arg > } > > limits = fileargs_create_limit(argc, (const char * const *)argv, flags, > - mode, rightsp); > + mode, rightsp, operations); > if (limits == NULL) > return (NULL); > > @@ -234,7 +271,7 @@ fileargs_cinitnv(cap_channel_t *cas, nvlist_t *limits) > cap_channel_t *chann; > fileargs_t *fa; > int serrno, ret; > - int flags; > + int flags, operations; > > assert(cas != NULL); > > @@ -252,6 +289,7 @@ fileargs_cinitnv(cap_channel_t *cas, nvlist_t *limits) > } > > flags = nvlist_get_number(limits, "flags"); > + operations = nvlist_get_number(limits, "operations"); > > /* Limits are consumed no need to free them. */ > ret = cap_limit_set(chann, limits); > @@ -291,11 +329,11 @@ fileargs_open(fileargs_t *fa, const char *name) > return (-1); > } > > - fd = fileargs_get_cache(fa, name); > + fd = fileargs_get_fd_cache(fa, name); > if (fd != -1) > return (fd); > > - nvl = fileargs_fetch(fa, name); > + nvl = fileargs_fetch(fa, name, "open"); > if (nvl == NULL) > return (-1); > > @@ -322,6 +360,53 @@ fileargs_fopen(fileargs_t *fa, const char *name, const > return (fdopen(fd, mode)); > } > > +int > +fileargs_lstat(fileargs_t *fa, const char *name, struct stat *sb) > +{ > + nvlist_t *nvl; > + const void *buf; > + size_t size; > + char *cmd; > + > + assert(fa != NULL); > + assert(fa->fa_magic == FILEARGS_MAGIC); > + > + if (name == NULL) { > + errno = EINVAL; > + return (-1); > + } > + > + if (sb == NULL) { > + errno = EFAULT; > + return (-1); > + } > + > + if (fa->fa_chann == NULL) { > + errno = ENOTCAPABLE; > + return (-1); > + } > + > + if (fileargs_get_lstat_cache(fa, name, sb) != -1) > + return (0); > + > + nvl = fileargs_fetch(fa, name, "lstat"); > + if (nvl == NULL) > + return (-1); > + > + buf = nvlist_get_binary(nvl, "stat", &size); > + assert(size == sizeof(*sb)); > + memcpy(sb, buf, size); > + > + cmd = nvlist_take_string(nvl, "cmd"); > + if (strcmp(cmd, "cache") == 0) > + fileargs_set_cache(fa, nvl); > + else > + nvlist_destroy(nvl); > + free(cmd); > + > + return (0); > +} > + > void > fileargs_free(fileargs_t *fa) > { > @@ -348,6 +433,7 @@ static void *cacheposition; > static bool allcached; > static const cap_rights_t *caprightsp; > static int capflags; > +static int allowed_operations; > static mode_t capmode; > > static int > @@ -382,6 +468,7 @@ fileargs_add_cache(nvlist_t *nvlout, const nvlist_t *l > void *cookie; > nvlist_t *new; > const char *fname; > + struct stat sb; > > if ((capflags & O_CREAT) != 0) { > allcached = true; > @@ -409,14 +496,25 @@ fileargs_add_cache(nvlist_t *nvlout, const nvlist_t *l > continue; > } > > - fd = open_file(fname); > - if (fd < 0) { > - i--; > - continue; > + new = nvlist_create(NV_FLAG_NO_UNIQUE); > + if ((allowed_operations & FA_OPEN) != 0) { > + fd = open_file(fname); > + if (fd < 0) { > + i--; > + nvlist_destroy(new); > + continue; > + } > + nvlist_move_descriptor(new, "fd", fd); > } > + if ((allowed_operations & FA_LSTAT) != 0) { > + if (lstat(fname, &sb) < 0) { > + i--; > + nvlist_destroy(new); > + continue; > + } > + nvlist_add_binary(new, "stat", &sb, sizeof(sb)); > + } > > - new = nvlist_create(NV_FLAG_NO_UNIQUE); > - nvlist_move_descriptor(new, "fd", fd); > nvlist_add_nvlist(nvlout, fname, new); > } > cacheposition = cookie; > @@ -424,10 +522,13 @@ fileargs_add_cache(nvlist_t *nvlout, const nvlist_t *l > } > > static bool > -fileargs_allowed(const nvlist_t *limits, const nvlist_t *request) > +fileargs_allowed(const nvlist_t *limits, const nvlist_t *request, int operation) > { > const char *name; > > + if ((allowed_operations & operation) == 0) > + return (false); > + > name = dnvlist_get_string(request, "name", NULL); > if (name == NULL) > return (false); > @@ -450,6 +551,7 @@ fileargs_limit(const nvlist_t *oldlimits, const nvlist > return (ENOTCAPABLE); > > capflags = (int)dnvlist_get_number(newlimits, "flags", 0); > + allowed_operations = (int)dnvlist_get_number(newlimits, "operations", 0); > if ((capflags & O_CREAT) != 0) > capmode = (mode_t)nvlist_get_number(newlimits, "mode"); > else > @@ -461,6 +563,37 @@ fileargs_limit(const nvlist_t *oldlimits, const nvlist > } > > static int > +fileargs_command_lstat(const nvlist_t *limits, nvlist_t *nvlin, > + nvlist_t *nvlout) > +{ > + int stat; > + const char *name; > + struct stat sb; > + > + if (limits == NULL) > + return (ENOTCAPABLE); > + > + if (!fileargs_allowed(limits, nvlin, FA_LSTAT)) > + return (ENOTCAPABLE); > + > + name = nvlist_get_string(nvlin, "name"); > + > + stat = lstat(name, &sb); > + if (stat < 0) > + return (errno); > + > + if (!allcached && (lastname == NULL || > + strcmp(name, lastname) == 0)) { > + nvlist_add_string(nvlout, "cmd", "cache"); > + fileargs_add_cache(nvlout, limits, name); > + } else { > + nvlist_add_string(nvlout, "cmd", "lstat"); > + } > + nvlist_add_binary(nvlout, "stat", &sb, sizeof(sb)); > + return (0); > +} > + > +static int > fileargs_command_open(const nvlist_t *limits, nvlist_t *nvlin, > nvlist_t *nvlout) > { > @@ -470,7 +603,7 @@ fileargs_command_open(const nvlist_t *limits, nvlist_t > if (limits == NULL) > return (ENOTCAPABLE); > > - if (!fileargs_allowed(limits, nvlin)) > + if (!fileargs_allowed(limits, nvlin, FA_OPEN)) > return (ENOTCAPABLE); > > name = nvlist_get_string(nvlin, "name"); > @@ -497,6 +630,9 @@ fileargs_command(const char *cmd, const nvlist_t *limi > > if (strcmp(cmd, "open") == 0) > return (fileargs_command_open(limits, nvlin, nvlout)); > + > + if (strcmp(cmd, "lstat") == 0) > + return (fileargs_command_lstat(limits, nvlin, nvlout)); > > return (EINVAL); > } > > Modified: head/lib/libcasper/services/cap_fileargs/cap_fileargs.h > ============================================================================== > --- head/lib/libcasper/services/cap_fileargs/cap_fileargs.h Wed Apr 17 16:00:33 > 2019 (r346314) +++ head/lib/libcasper/services/cap_fileargs/cap_fileargs.h Wed Apr > 17 16:02:57 2019 (r346315) @@ -36,16 +36,21 @@ > > #include > > +#define FA_OPEN 1 > +#define FA_LSTAT 2 > + > #ifdef WITH_CASPER > struct fileargs; > typedef struct fileargs fileargs_t; > +struct stat; > > fileargs_t *fileargs_init(int argc, char *argv[], int flags, mode_t mode, > - cap_rights_t *rightsp); > + cap_rights_t *rightsp, int operations); > fileargs_t *fileargs_cinit(cap_channel_t *cas, int argc, char *argv[], > - int flags, mode_t mode, cap_rights_t *rightsp); > + int flags, mode_t mode, cap_rights_t *rightsp, int operations); > fileargs_t *fileargs_initnv(nvlist_t *limits); > fileargs_t *fileargs_cinitnv(cap_channel_t *cas, nvlist_t *limits); > +int fileargs_lstat(fileargs_t *fa, const char *name, struct stat *sb); > int fileargs_open(fileargs_t *fa, const char *name); > void fileargs_free(fileargs_t *fa); > FILE *fileargs_fopen(fileargs_t *fa, const char *name, const char *mode); > @@ -57,7 +62,7 @@ typedef struct fileargs { > > static inline fileargs_t * > fileargs_init(int argc __unused, char *argv[] __unused, int flags, mode_t mode, > - cap_rights_t *rightsp __unused) { > + cap_rights_t *rightsp __unused, int operations __unused) { > fileargs_t *fa; > > fa = malloc(sizeof(*fa)); > @@ -71,10 +76,10 @@ fileargs_init(int argc __unused, char *argv[] __unused > > static inline fileargs_t * > fileargs_cinit(cap_channel_t *cas __unused, int argc, char *argv[], int flags, > - mode_t mode, cap_rights_t *rightsp) > + mode_t mode, cap_rights_t *rightsp, int operations) > { > > - return (fileargs_init(argc, argv, flags, mode, rightsp)); > + return (fileargs_init(argc, argv, flags, mode, rightsp, operations)); > } > > static inline fileargs_t * > @@ -85,7 +90,8 @@ fileargs_initnv(nvlist_t *limits) > fa = fileargs_init(0, NULL, > nvlist_get_number(limits, "flags"), > dnvlist_get_number(limits, "mode", 0), > - NULL); > + NULL, > + nvlist_get_number(limits, "operations")); > nvlist_destroy(limits); > > return (fa); > @@ -98,6 +104,8 @@ fileargs_cinitnv(cap_channel_t *cas __unused, nvlist_t > return (fileargs_initnv(limits)); > } > > +#define fileargs_lstat(fa, name, sb) \ > + lstat(name, sb) > #define fileargs_open(fa, name) \ > open(name, fa->fa_flags, fa->fa_mode) > #define fileargs_fopen(fa, name, mode) \ > _______________________________________________ > svn-src-all@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/svn-src-all > To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org"