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t_nullpts.c
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t_ptyfs.c
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Editing: t_nullpts.c
/* $NetBSD: t_nullpts.c,v 1.6 2017/01/13 21:30:40 christos Exp $ */ #include <sys/types.h> #include <sys/mount.h> #include <sys/ioctl.h> #include <atf-c.h> #include <err.h> #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <unistd.h> #include <string.h> #include <stdlib.h> #include <rump/rump.h> #include <rump/rump_syscalls.h> #include <fs/ptyfs/ptyfs.h> #include <miscfs/nullfs/null.h> #include "h_macros.h" static void mountptyfs(const char *mp, int flags) { struct ptyfs_args args; if (rump_sys_mkdir(mp, 0777) == -1) { if (errno != EEXIST) atf_tc_fail_errno("null create %s", mp); } memset(&args, 0, sizeof(args)); args.version = PTYFS_ARGSVERSION; args.mode = 0777; if (rump_sys_mount(MOUNT_PTYFS, mp, flags, &args, sizeof(args)) == -1) atf_tc_fail_errno("could not mount ptyfs"); } static void mountnull(const char *what, const char *mp, int flags) { struct null_args nargs; if (rump_sys_mkdir(what, 0777) == -1) { if (errno != EEXIST) atf_tc_fail_errno("null create %s", what); } if (rump_sys_mkdir(mp, 0777) == -1) { if (errno != EEXIST) atf_tc_fail_errno("null create %s", mp); } memset(&nargs, 0, sizeof(nargs)); nargs.nulla_target = __UNCONST(what); if (rump_sys_mount(MOUNT_NULL, mp, flags, &nargs, sizeof(nargs)) == -1) atf_tc_fail_errno("could not mount nullfs"); } ATF_TC(nullrevoke); ATF_TC_HEAD(nullrevoke, tc) { atf_tc_set_md_var(tc, "descr", "null mount ptyfs and revoke"); } ATF_TC_BODY(nullrevoke, tc) { char path[MAXPATHLEN]; struct ptmget ptg; int ptm; rump_init(); /* * mount /dev/pts */ mountptyfs("/dev/pts", 0); /* * null mount /dev/pts to /null/dev/pts */ if (rump_sys_mkdir("/null", 0777) == -1) { if (errno != EEXIST) atf_tc_fail_errno("null create /null"); } if (rump_sys_mkdir("/null/dev", 0777) == -1) { if (errno != EEXIST) atf_tc_fail_errno("null create /null/dev"); } mountnull("/dev/pts", "/null/dev/pts", 0); /* * get slave/master pair. */ ptm = rump_sys_open("/dev/ptm", O_RDWR); if (rump_sys_ioctl(ptm, TIOCPTMGET, &ptg) == -1) atf_tc_fail_errno("get pty"); /* * Build nullfs path to slave. */ strcpy(path, "/null"); strcat(path, ptg.sn); /* * Open slave tty via nullfs. */ if (rump_sys_open(path, O_RDWR) == -1) atf_tc_fail_errno("slave null open"); /* * Close slave opened with /dev/ptm. Need purely non-null refs to it. */ rump_sys_close(ptg.sfd); /* revoke slave tty. */ rump_sys_revoke(path); /* done */ } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, nullrevoke); return atf_no_error(); }
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