Date: Tue, 25 Nov 2014 21:01:09 +0000 (UTC) From: Jamie Gritton <jamie@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r275073 - in head: lib/libjail usr.sbin/jail Message-ID: <201411252101.sAPL19la081191@svn.freebsd.org>
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Author: jamie Date: Tue Nov 25 21:01:08 2014 New Revision: 275073 URL: https://svnweb.freebsd.org/changeset/base/275073 Log: In preparation for using clang's -Wcast-qual: Use __DECONST (instead of my own attempted re-invention) for the iov parameters to jail_get/set(2). Similarly remove the decost-ish hack from execvp's argv, except the __DECONST is only added at very end. While I'm at it, remove an unused variable and fix a comment typo. Modified: head/lib/libjail/jail.c head/lib/libjail/jail_getid.c head/usr.sbin/jail/command.c head/usr.sbin/jail/jail.c head/usr.sbin/jail/state.c Modified: head/lib/libjail/jail.c ============================================================================== --- head/lib/libjail/jail.c Tue Nov 25 21:00:58 2014 (r275072) +++ head/lib/libjail/jail.c Tue Nov 25 21:01:08 2014 (r275073) @@ -531,7 +531,7 @@ jailparam_set(struct jailparam *jp, unsi } i++; } - *(const void **)&jiov[i].iov_base = "errmsg"; + jiov[i].iov_base = __DECONST(char *, "errmsg"); jiov[i].iov_len = sizeof("errmsg"); i++; jiov[i].iov_base = jail_errmsg; @@ -601,7 +601,7 @@ jailparam_get(struct jailparam *jp, unsi jiov[ki].iov_len = (jp_key->jp_ctltype & CTLTYPE) == CTLTYPE_STRING ? strlen(jp_key->jp_value) + 1 : jp_key->jp_valuelen; ki++; - *(const void **)&jiov[ki].iov_base = "errmsg"; + jiov[ki].iov_base = __DECONST(char *, "errmsg"); jiov[ki].iov_len = sizeof("errmsg"); ki++; jiov[ki].iov_base = jail_errmsg; Modified: head/lib/libjail/jail_getid.c ============================================================================== --- head/lib/libjail/jail_getid.c Tue Nov 25 21:00:58 2014 (r275072) +++ head/lib/libjail/jail_getid.c Tue Nov 25 21:01:08 2014 (r275073) @@ -53,12 +53,12 @@ jail_getid(const char *name) jid = strtoul(name, &ep, 10); if (*name && !*ep) return jid; - *(const void **)&jiov[0].iov_base = "name"; + jiov[0].iov_base = __DECONST(char *, "name"); jiov[0].iov_len = sizeof("name"); jiov[1].iov_len = strlen(name) + 1; jiov[1].iov_base = alloca(jiov[1].iov_len); strcpy(jiov[1].iov_base, name); - *(const void **)&jiov[2].iov_base = "errmsg"; + jiov[2].iov_base = __DECONST(char *, "errmsg"); jiov[2].iov_len = sizeof("errmsg"); jiov[3].iov_base = jail_errmsg; jiov[3].iov_len = JAIL_ERRMSGLEN; @@ -80,15 +80,15 @@ jail_getname(int jid) char *name; char namebuf[MAXHOSTNAMELEN]; - *(const void **)&jiov[0].iov_base = "jid"; + jiov[0].iov_base = __DECONST(char *, "jid"); jiov[0].iov_len = sizeof("jid"); jiov[1].iov_base = &jid; jiov[1].iov_len = sizeof(jid); - *(const void **)&jiov[2].iov_base = "name"; + jiov[2].iov_base = __DECONST(char *, "name"); jiov[2].iov_len = sizeof("name"); jiov[3].iov_base = namebuf; jiov[3].iov_len = sizeof(namebuf); - *(const void **)&jiov[4].iov_base = "errmsg"; + jiov[4].iov_base = __DECONST(char *, "errmsg"); jiov[4].iov_len = sizeof("errmsg"); jiov[5].iov_base = jail_errmsg; jiov[5].iov_len = JAIL_ERRMSGLEN; Modified: head/usr.sbin/jail/command.c ============================================================================== --- head/usr.sbin/jail/command.c Tue Nov 25 21:00:58 2014 (r275072) +++ head/usr.sbin/jail/command.c Tue Nov 25 21:01:08 2014 (r275073) @@ -260,8 +260,8 @@ run_command(struct cfjail *j) const struct passwd *pwd; const struct cfstring *comstring, *s; login_cap_t *lcap; - char **argv; - char *cs, *comcs, *devpath; + const char **argv; + char *acs, *cs, *comcs, *devpath; const char *jidstr, *conslog, *path, *ruleset, *term, *username; enum intparam comparam; size_t comlen; @@ -332,27 +332,26 @@ run_command(struct cfjail *j) } argv = alloca((8 + argc) * sizeof(char *)); - *(const char **)&argv[0] = _PATH_IFCONFIG; + argv[0] = _PATH_IFCONFIG; if ((cs = strchr(val, '|'))) { - argv[1] = alloca(cs - val + 1); - strlcpy(argv[1], val, cs - val + 1); + argv[1] = acs = alloca(cs - val + 1); + strlcpy(acs, val, cs - val + 1); addr = cs + 1; } else { - *(const char **)&argv[1] = - string_param(j->intparams[IP_INTERFACE]); + argv[1] = string_param(j->intparams[IP_INTERFACE]); addr = val; } - *(const char **)&argv[2] = "inet"; + argv[2] = "inet"; if (!(cs = strchr(addr, '/'))) { argv[3] = addr; - *(const char **)&argv[4] = "netmask"; - *(const char **)&argv[5] = "255.255.255.255"; + argv[4] = "netmask"; + argv[5] = "255.255.255.255"; argc = 6; } else if (strchr(cs + 1, '.')) { - argv[3] = alloca(cs - addr + 1); - strlcpy(argv[3], addr, cs - addr + 1); - *(const char **)&argv[4] = "netmask"; - *(const char **)&argv[5] = cs + 1; + argv[3] = acs = alloca(cs - addr + 1); + strlcpy(acs, addr, cs - addr + 1); + argv[4] = "netmask"; + argv[5] = cs + 1; argc = 6; } else { argv[3] = addr; @@ -360,14 +359,15 @@ run_command(struct cfjail *j) } if (!down) { - for (cs = strtok(extrap, " "); cs; cs = strtok(NULL, " ")) { + for (cs = strtok(extrap, " "); cs; + cs = strtok(NULL, " ")) { size_t len = strlen(cs) + 1; - argv[argc] = alloca(len); - strlcpy(argv[argc++], cs, len); + argv[argc++] = acs = alloca(len); + strlcpy(acs, cs, len); } } - *(const char **)&argv[argc] = down ? "-alias" : "alias"; + argv[argc] = down ? "-alias" : "alias"; argv[argc + 1] = NULL; break; #endif @@ -389,46 +389,45 @@ run_command(struct cfjail *j) } argv = alloca((8 + argc) * sizeof(char *)); - *(const char **)&argv[0] = _PATH_IFCONFIG; + argv[0] = _PATH_IFCONFIG; if ((cs = strchr(val, '|'))) { - argv[1] = alloca(cs - val + 1); - strlcpy(argv[1], val, cs - val + 1); + argv[1] = acs = alloca(cs - val + 1); + strlcpy(acs, val, cs - val + 1); addr = cs + 1; } else { - *(const char **)&argv[1] = - string_param(j->intparams[IP_INTERFACE]); + argv[1] = string_param(j->intparams[IP_INTERFACE]); addr = val; } - *(const char **)&argv[2] = "inet6"; + argv[2] = "inet6"; argv[3] = addr; if (!(cs = strchr(addr, '/'))) { - *(const char **)&argv[4] = "prefixlen"; - *(const char **)&argv[5] = "128"; + argv[4] = "prefixlen"; + argv[5] = "128"; argc = 6; } else argc = 4; if (!down) { - for (cs = strtok(extrap, " "); cs; cs = strtok(NULL, " ")) { + for (cs = strtok(extrap, " "); cs; + cs = strtok(NULL, " ")) { size_t len = strlen(cs) + 1; - argv[argc] = alloca(len); - strlcpy(argv[argc++], cs, len); + argv[argc++] = acs = alloca(len); + strlcpy(acs, cs, len); } } - *(const char **)&argv[argc] = down ? "-alias" : "alias"; + argv[argc] = down ? "-alias" : "alias"; argv[argc + 1] = NULL; break; #endif case IP_VNET_INTERFACE: argv = alloca(5 * sizeof(char *)); - *(const char **)&argv[0] = _PATH_IFCONFIG; + argv[0] = _PATH_IFCONFIG; argv[1] = comstring->s; - *(const char **)&argv[2] = down ? "-vnet" : "vnet"; + argv[2] = down ? "-vnet" : "vnet"; jidstr = string_param(j->intparams[KP_JID]); - *(const char **)&argv[3] = - jidstr ? jidstr : string_param(j->intparams[KP_NAME]); + argv[3] = jidstr ? jidstr : string_param(j->intparams[KP_NAME]); argv[4] = NULL; break; @@ -454,22 +453,22 @@ run_command(struct cfjail *j) if (down) { argv[4] = NULL; argv[3] = argv[1]; - *(const char **)&argv[0] = "/sbin/umount"; + argv[0] = "/sbin/umount"; } else { if (argc == 4) { argv[7] = NULL; argv[6] = argv[1]; argv[5] = argv[0]; argv[4] = argv[3]; - *(const char **)&argv[3] = "-o"; + argv[3] = "-o"; } else { argv[5] = NULL; argv[4] = argv[1]; argv[3] = argv[0]; } - *(const char **)&argv[0] = _PATH_MOUNT; + argv[0] = _PATH_MOUNT; } - *(const char **)&argv[1] = "-t"; + argv[1] = "-t"; break; case IP_MOUNT_DEVFS: @@ -485,19 +484,19 @@ run_command(struct cfjail *j) down ? "devfs" : NULL) < 0) return -1; if (down) { - *(const char **)&argv[0] = "/sbin/umount"; + argv[0] = "/sbin/umount"; argv[1] = devpath; argv[2] = NULL; } else { - *(const char **)&argv[0] = _PATH_MOUNT; - *(const char **)&argv[1] = "-t"; - *(const char **)&argv[2] = "devfs"; + argv[0] = _PATH_MOUNT; + argv[1] = "-t"; + argv[2] = "devfs"; ruleset = string_param(j->intparams[KP_DEVFS_RULESET]); if (!ruleset) ruleset = "4"; /* devfsrules_jail */ - argv[3] = alloca(11 + strlen(ruleset)); - sprintf(argv[3], "-oruleset=%s", ruleset); - *(const char **)&argv[4] = "."; + argv[3] = acs = alloca(11 + strlen(ruleset)); + sprintf(acs, "-oruleset=%s", ruleset); + argv[4] = "."; argv[5] = devpath; argv[6] = NULL; } @@ -516,14 +515,14 @@ run_command(struct cfjail *j) down ? "fdescfs" : NULL) < 0) return -1; if (down) { - *(const char **)&argv[0] = "/sbin/umount"; + argv[0] = "/sbin/umount"; argv[1] = devpath; argv[2] = NULL; } else { - *(const char **)&argv[0] = _PATH_MOUNT; - *(const char **)&argv[1] = "-t"; - *(const char **)&argv[2] = "fdescfs"; - *(const char **)&argv[3] = "."; + argv[0] = _PATH_MOUNT; + argv[1] = "-t"; + argv[2] = "fdescfs"; + argv[3] = "."; argv[4] = devpath; argv[5] = NULL; } @@ -548,8 +547,8 @@ run_command(struct cfjail *j) if ((cs = strpbrk(comstring->s, "!\"$&'()*;<>?[\\]`{|}~")) && !(cs[0] == '&' && cs[1] == '\0')) { argv = alloca(4 * sizeof(char *)); - *(const char **)&argv[0] = _PATH_BSHELL; - *(const char **)&argv[1] = "-c"; + argv[0] = _PATH_BSHELL; + argv[1] = "-c"; argv[2] = comstring->s; argv[3] = NULL; } else { @@ -693,7 +692,7 @@ run_command(struct cfjail *j) exit(1); } closefrom(3); - execvp(argv[0], argv); + execvp(argv[0], __DECONST(char *const*, argv)); jail_warnx(j, "exec %s: %s", argv[0], strerror(errno)); exit(1); } Modified: head/usr.sbin/jail/jail.c ============================================================================== --- head/usr.sbin/jail/jail.c Tue Nov 25 21:00:58 2014 (r275072) +++ head/usr.sbin/jail/jail.c Tue Nov 25 21:01:08 2014 (r275073) @@ -656,11 +656,11 @@ create_jail(struct cfjail *j) * The jail already exists, but may be dying. * Make sure it is, in which case an update is appropriate. */ - *(const void **)&jiov[0].iov_base = "jid"; + jiov[0].iov_base = __DECONST(char *, "jid"); jiov[0].iov_len = sizeof("jid"); jiov[1].iov_base = &jid; jiov[1].iov_len = sizeof(jid); - *(const void **)&jiov[2].iov_base = "dying"; + jiov[2].iov_base = __DECONST(char *, "dying"); jiov[2].iov_len = sizeof("dying"); jiov[3].iov_base = &dying; jiov[3].iov_len = sizeof(dying); @@ -721,11 +721,11 @@ clear_persist(struct cfjail *j) if (!(j->flags & JF_PERSIST)) return; j->flags &= ~JF_PERSIST; - *(const void **)&jiov[0].iov_base = "jid"; + jiov[0].iov_base = __DECONST(char *, "jid"); jiov[0].iov_len = sizeof("jid"); jiov[1].iov_base = &j->jid; jiov[1].iov_len = sizeof(j->jid); - *(const void **)&jiov[2].iov_base = "nopersist"; + jiov[2].iov_base = __DECONST(char *, "nopersist"); jiov[2].iov_len = sizeof("nopersist"); jiov[3].iov_base = NULL; jiov[3].iov_len = 0; @@ -849,12 +849,12 @@ running_jid(struct cfjail *j, int dflag) j->jid = -1; return; } - *(const void **)&jiov[0].iov_base = "jid"; + jiov[0].iov_base = __DECONST(char *, "jid"); jiov[0].iov_len = sizeof("jid"); jiov[1].iov_base = &jid; jiov[1].iov_len = sizeof(jid); } else if ((pval = string_param(j->intparams[KP_NAME]))) { - *(const void **)&jiov[0].iov_base = "name"; + jiov[0].iov_base = __DECONST(char *, "name"); jiov[0].iov_len = sizeof("name"); jiov[1].iov_len = strlen(pval) + 1; jiov[1].iov_base = alloca(jiov[1].iov_len); @@ -880,7 +880,7 @@ jail_quoted_warnx(const struct cfjail *j } /* - * Set jail parameters and possible print them out. + * Set jail parameters and possibly print them out. */ static int jailparam_set_note(const struct cfjail *j, struct jailparam *jp, unsigned njp, Modified: head/usr.sbin/jail/state.c ============================================================================== --- head/usr.sbin/jail/state.c Tue Nov 25 21:00:58 2014 (r275072) +++ head/usr.sbin/jail/state.c Tue Nov 25 21:01:08 2014 (r275073) @@ -60,7 +60,7 @@ dep_setup(int docf) const char *cs; char *pname; size_t plen; - int error, deps, ldeps; + int deps, ldeps; if (!docf) { /* @@ -88,7 +88,6 @@ dep_setup(int docf) TAILQ_FOREACH(j, &cfjails, tq) jails_byname[njails++] = j; qsort(jails_byname, njails, sizeof(struct cfjail *), cmp_jailptr); - error = 0; deps = 0; ldeps = 0; plen = 0; @@ -331,15 +330,15 @@ start_state(const char *target, int docf * -R matches its wildcards against currently running * jails, not against the config file. */ - *(const void **)&jiov[0].iov_base = "lastjid"; + jiov[0].iov_base = __DECONST(char *, "lastjid"); jiov[0].iov_len = sizeof("lastjid"); jiov[1].iov_base = &jid; jiov[1].iov_len = sizeof(jid); - *(const void **)&jiov[2].iov_base = "jid"; + jiov[2].iov_base = __DECONST(char *, "jid"); jiov[2].iov_len = sizeof("jid"); jiov[3].iov_base = &jid; jiov[3].iov_len = sizeof(jid); - *(const void **)&jiov[4].iov_base = "name"; + jiov[4].iov_base = __DECONST(char *, "name"); jiov[4].iov_len = sizeof("name"); jiov[5].iov_base = &namebuf; jiov[5].iov_len = sizeof(namebuf); @@ -454,12 +453,12 @@ running_jid(const char *name, int flags) int jid; if ((jid = strtol(name, &ep, 10)) && !*ep) { - *(const void **)&jiov[0].iov_base = "jid"; + jiov[0].iov_base = __DECONST(char *, "jid"); jiov[0].iov_len = sizeof("jid"); jiov[1].iov_base = &jid; jiov[1].iov_len = sizeof(jid); } else { - *(const void **)&jiov[0].iov_base = "name"; + jiov[0].iov_base = __DECONST(char *, "name"); jiov[0].iov_len = sizeof("name"); jiov[1].iov_len = strlen(name) + 1; jiov[1].iov_base = alloca(jiov[1].iov_len);
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