Date: Mon, 29 Jun 2020 22:12:23 +0000 (UTC) From: Alan Somers <asomers@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362790 - in head: sbin/savecore share/man/man5 Message-ID: <202006292212.05TMCNYx058759@repo.freebsd.org>
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Author: asomers Date: Mon Jun 29 22:12:23 2020 New Revision: 362790 URL: https://svnweb.freebsd.org/changeset/base/362790 Log: savecore: accept device names without the /dev/ prefix dumpon has accepted device names without the prefix ever since r291207. Since dumpon and savecore are always paired, they ought to accept the same arguments. Prior to this change, specifying 'dumpdev="da3"' in /etc/rc.conf, for example, would result in dumpon working just fine but savecore complaining that "Dump device does not exist". PR: 247618 Reviewed by: cem, bcr MFC after: 2 weeks Sponsored by: Axcient Differential Revision: https://reviews.freebsd.org/D25500 Modified: head/sbin/savecore/savecore.c head/share/man/man5/rc.conf.5 Modified: head/sbin/savecore/savecore.c ============================================================================== --- head/sbin/savecore/savecore.c Mon Jun 29 21:35:50 2020 (r362789) +++ head/sbin/savecore/savecore.c Mon Jun 29 22:12:23 2020 (r362790) @@ -973,7 +973,45 @@ closefd: close(fddev); } +/* Prepend "/dev/" to any arguments that don't already have it */ static char ** +devify(int argc, char **argv) +{ + char **devs; + int i, l; + + devs = malloc(argc * sizeof(*argv)); + if (devs == NULL) { + logmsg(LOG_ERR, "malloc(): %m"); + exit(1); + } + for (i = 0; i < argc; i++) { + if (strncmp(argv[i], _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) + devs[i] = strdup(argv[i]); + else { + char *fullpath; + + fullpath = malloc(PATH_MAX); + if (fullpath == NULL) { + logmsg(LOG_ERR, "malloc(): %m"); + exit(1); + } + l = snprintf(fullpath, PATH_MAX, "%s%s", _PATH_DEV, + argv[i]); + if (l < 0) { + logmsg(LOG_ERR, "snprintf(): %m"); + exit(1); + } else if (l >= PATH_MAX) { + logmsg(LOG_ERR, "device name too long"); + exit(1); + } + devs[i] = fullpath; + } + } + return (devs); +} + +static char ** enum_dumpdevs(int *argcp) { struct fstab *fsp; @@ -1069,6 +1107,7 @@ main(int argc, char **argv) { cap_rights_t rights; const char *savedir; + char **devs; int i, ch, error, savedirfd; checkfor = compress = clear = force = keep = verbose = 0; @@ -1132,7 +1171,9 @@ main(int argc, char **argv) argv++; } if (argc == 0) - argv = enum_dumpdevs(&argc); + devs = enum_dumpdevs(&argc); + else + devs = devify(argc, argv); savedirfd = open(savedir, O_RDONLY | O_DIRECTORY); if (savedirfd < 0) { @@ -1148,10 +1189,10 @@ main(int argc, char **argv) } /* Enter capability mode. */ - init_caps(argc, argv); + init_caps(argc, devs); for (i = 0; i < argc; i++) - DoFile(savedir, savedirfd, argv[i]); + DoFile(savedir, savedirfd, devs[i]); /* Emit minimal output. */ if (nfound == 0) { Modified: head/share/man/man5/rc.conf.5 ============================================================================== --- head/share/man/man5/rc.conf.5 Mon Jun 29 21:35:50 2020 (r362789) +++ head/share/man/man5/rc.conf.5 Mon Jun 29 22:12:23 2020 (r362790) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd June 23, 2020 +.Dd June 28, 2020 .Dt RC.CONF 5 .Os .Sh NAME @@ -3469,7 +3469,9 @@ the first suitable swap device listed in .Pa /etc/fstab will be used as dump device. Otherwise, the value of this variable is passed as the argument to -.Xr dumpon 8 . +.Xr dumpon 8 +and +.Xr savecore 8 . To disable crash dumps, set this variable to .Dq Li NO . .It Va dumpon_flags
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