1 /* 2 * Copyright (c) 1989 Jan-Simon Pendry 3 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Jan-Simon Pendry at Imperial College, London. 9 * 10 * %sccs.include.redist.c% 11 * 12 * @(#)pfs_ops.c 8.1 (Berkeley) 06/06/93 13 * 14 * $Id: pfs_ops.c,v 5.2.2.1 1992/02/09 15:08:56 jsp beta $ 15 * 16 */ 17 18 #include "am.h" 19 20 #ifdef HAS_PFS 21 22 /* 23 * Program file system 24 */ 25 26 /* 27 * Execute needs a mount and unmount command. 28 */ 29 static char *pfs_match(fo) 30 am_opts *fo; 31 { 32 char *prog; 33 if (!fo->opt_mount || !fo->opt_unmount) { 34 plog(XLOG_USER, "program: no mount/unmount specified"); 35 return 0; 36 } 37 prog = strchr(fo->opt_mount, ' '); 38 return strdup(prog ? prog+1 : fo->opt_mount); 39 } 40 41 static int pfs_init(mf) 42 mntfs *mf; 43 { 44 /* 45 * Save unmount command 46 */ 47 if (mf->mf_refc == 1) { 48 mf->mf_private = (voidp) strdup(mf->mf_fo->opt_unmount); 49 mf->mf_prfree = (void (*) ()) free; 50 } 51 return 0; 52 } 53 54 static int pfs_exec(info) 55 char *info; 56 { 57 char **xivec; 58 int error; 59 /* 60 * Split copy of command info string 61 */ 62 info = strdup(info); 63 if (info == 0) 64 return ENOBUFS; 65 xivec = strsplit(info, ' ', '\''); 66 /* 67 * Put stdout to stderr 68 */ 69 (void) fclose(stdout); 70 (void) dup(fileno(logfp)); 71 if (fileno(logfp) != fileno(stderr)) { 72 (void) fclose(stderr); 73 (void) dup(fileno(logfp)); 74 } 75 /* 76 * Try the exec 77 */ 78 #ifdef DEBUG 79 Debug(D_FULL) { 80 char **cp = xivec; 81 plog(XLOG_DEBUG, "executing (un)mount command..."); 82 while (*cp) { 83 plog(XLOG_DEBUG, "arg[%d] = '%s'", cp-xivec, *cp); 84 cp++; 85 } 86 } 87 #endif /* DEBUG */ 88 if (xivec[0] == 0 || xivec[1] == 0) { 89 errno = EINVAL; 90 plog(XLOG_USER, "1st/2nd args missing to (un)mount program"); 91 } else { 92 (void) execv(xivec[0], xivec+1); 93 } 94 /* 95 * Save error number 96 */ 97 error = errno; 98 plog(XLOG_ERROR, "exec failed: %m"); 99 100 /* 101 * Free allocate memory 102 */ 103 free((voidp) info); 104 free((voidp) xivec); 105 /* 106 * Return error 107 */ 108 return error; 109 } 110 111 static int pfs_fmount(mf) 112 mntfs *mf; 113 { 114 return pfs_exec(mf->mf_fo->opt_mount); 115 } 116 117 static int pfs_fumount(mf) 118 mntfs *mf; 119 { 120 return pfs_exec((char *) mf->mf_private); 121 } 122 123 /* 124 * Ops structure 125 */ 126 am_ops pfs_ops = { 127 "program", 128 pfs_match, 129 pfs_init, 130 auto_fmount, 131 pfs_fmount, 132 auto_fumount, 133 pfs_fumount, 134 efs_lookuppn, 135 efs_readdir, 136 0, /* pfs_readlink */ 137 0, /* pfs_mounted */ 138 0, /* pfs_umounted */ 139 find_afs_srvr, 140 FS_BACKGROUND|FS_AMQINFO 141 }; 142 143 #endif /* HAS_PFS */ 144