diff options
Diffstat (limited to 'amd/amfs_program.c')
| -rw-r--r-- | amd/amfs_program.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/amd/amfs_program.c b/amd/amfs_program.c new file mode 100644 index 000000000000..843e8050c11b --- /dev/null +++ b/amd/amfs_program.c @@ -0,0 +1,205 @@ +/* + * Copyright (c) 1997-2006 Erez Zadok + * Copyright (c) 1989 Jan-Simon Pendry + * Copyright (c) 1989 Imperial College of Science, Technology & Medicine + * Copyright (c) 1989 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Jan-Simon Pendry at Imperial College, London. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgment: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * + * File: am-utils/amd/amfs_program.c + * + */ + +/* + * Program file system + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* HAVE_CONFIG_H */ +#include <am_defs.h> +#include <amd.h> + +/* forward definitions */ +static char *amfs_program_match(am_opts *fo); +static int amfs_program_mount(am_node *am, mntfs *mf); +static int amfs_program_umount(am_node *am, mntfs *mf); +static int amfs_program_init(mntfs *mf); + +/* + * Ops structure + */ +am_ops amfs_program_ops = +{ + "program", + amfs_program_match, + amfs_program_init, + amfs_program_mount, + amfs_program_umount, + amfs_error_lookup_child, + amfs_error_mount_child, + amfs_error_readdir, + 0, /* amfs_program_readlink */ + 0, /* amfs_program_mounted */ + 0, /* amfs_program_umounted */ + amfs_generic_find_srvr, + 0, /* amfs_program_get_wchan */ + FS_MKMNT | FS_BACKGROUND | FS_AMQINFO, /* nfs_fs_flags */ +#ifdef HAVE_FS_AUTOFS + AUTOFS_PROGRAM_FS_FLAGS, +#endif /* HAVE_FS_AUTOFS */ +}; + + +/* + * Execute needs a mount and unmount command. + */ +static char * +amfs_program_match(am_opts *fo) +{ + char *prog; + + if (fo->opt_unmount && fo->opt_umount) { + plog(XLOG_ERROR, "program: cannot specify both unmount and umount options"); + return 0; + } + if (!fo->opt_mount) { + plog(XLOG_ERROR, "program: must specify mount command"); + return 0; + } + if (!fo->opt_unmount && !fo->opt_umount) { + fo->opt_unmount = str3cat(NULL, UNMOUNT_PROGRAM, " umount ", fo->opt_fs); + plog(XLOG_INFO, "program: un/umount not specified; using default \"%s\"", + fo->opt_unmount); + } + prog = strchr(fo->opt_mount, ' '); + + return strdup(prog ? prog + 1 : fo->opt_mount); +} + + +static int +amfs_program_init(mntfs *mf) +{ + /* check if already saved value */ + if (mf->mf_private != NULL) + return 0; + + /* save unmount (or umount) command */ + if (mf->mf_fo->opt_unmount != NULL) + mf->mf_private = (opaque_t) strdup(mf->mf_fo->opt_unmount); + else + mf->mf_private = (opaque_t) strdup(mf->mf_fo->opt_umount); + mf->mf_prfree = (void (*)(opaque_t)) free; + + return 0; +} + + +static int +amfs_program_exec(char *info) +{ + char **xivec; + int error; + + /* + * Split copy of command info string + */ + info = strdup(info); + if (info == 0) + return ENOBUFS; + xivec = strsplit(info, ' ', '\''); + + /* + * Put stdout to stderr + */ + (void) fclose(stdout); + if (!logfp) + logfp = stderr; /* initialize before possible first use */ + (void) dup(fileno(logfp)); + if (fileno(logfp) != fileno(stderr)) { + (void) fclose(stderr); + (void) dup(fileno(logfp)); + } + + /* + * Try the exec + */ + if (amuDebug(D_FULL)) { + char **cp = xivec; + plog(XLOG_DEBUG, "executing (un)mount command..."); + while (*cp) { + plog(XLOG_DEBUG, "arg[%ld] = '%s'", (long) (cp - xivec), *cp); + cp++; + } + } + + if (xivec[0] == 0 || xivec[1] == 0) { + errno = EINVAL; + plog(XLOG_USER, "1st/2nd args missing to (un)mount program"); + } else { + (void) execv(xivec[0], xivec + 1); + } + + /* + * Save error number + */ + error = errno; + plog(XLOG_ERROR, "exec failed: %m"); + + /* + * Free allocate memory + */ + XFREE(info); + XFREE(xivec); + + /* + * Return error + */ + return error; +} + + +static int +amfs_program_mount(am_node *am, mntfs *mf) +{ + return amfs_program_exec(mf->mf_fo->opt_mount); +} + + +static int +amfs_program_umount(am_node *am, mntfs *mf) +{ + return amfs_program_exec((char *) mf->mf_private); +} |