1 /* 2 * $Id: mtab.c,v 5.2.1.1 90/10/21 22:29:27 jsp Exp $ 3 * 4 * Copyright (c) 1989 Jan-Simon Pendry 5 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine 6 * Copyright (c) 1989 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Jan-Simon Pendry at Imperial College, London. 11 * 12 * %sccs.include.redist.c% 13 * 14 * @(#)mtab.c 5.2 (Berkeley) 03/17/91 15 */ 16 17 #include "am.h" 18 19 /* 20 * Firewall /etc/mtab entries 21 */ 22 void mnt_free P((struct mntent *mp)); 23 void mnt_free(mp) 24 struct mntent *mp; 25 { 26 free(mp->mnt_fsname); 27 free(mp->mnt_dir); 28 free(mp->mnt_type); 29 free(mp->mnt_opts); 30 free((voidp) mp); 31 } 32 33 /* 34 * Discard memory allocated for mount list 35 */ 36 void discard_mntlist P((mntlist *mp)); 37 void discard_mntlist(mp) 38 mntlist *mp; 39 { 40 mntlist *mp2; 41 42 while (mp2 = mp) { 43 mp = mp->mnext; 44 if (mp2->mnt) 45 mnt_free(mp2->mnt); 46 free((voidp) mp2); 47 } 48 } 49 50 /* 51 * Throw away a mount list 52 */ 53 void free_mntlist P((mntlist *mp)); 54 void free_mntlist(mp) 55 mntlist *mp; 56 { 57 discard_mntlist(mp); 58 unlock_mntlist(); 59 } 60 61 /* 62 * Utility routine which determines the value of a 63 * numeric option in the mount options (such as port=%d). 64 * Returns 0 if the option is not specified. 65 */ 66 int hasmntval P((struct mntent *mnt, char *opt)); 67 int hasmntval(mnt, opt) 68 struct mntent *mnt; 69 char *opt; 70 { 71 char *str = hasmntopt(mnt, opt); 72 if (str) { 73 char *eq = strchr(str, '='); 74 if (eq) 75 return atoi(eq+1); 76 else 77 plog(XLOG_USER, "bad numeric option \"%s\" in \"%s\"", opt, str); 78 } 79 80 return 0; 81 } 82