1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Kenneth Almquist. 7 * 8 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)mail.c 8.1 (Berkeley) 05/31/93"; 13 #endif /* not lint */ 14 15 /* 16 * Routines to check for mail. (Perhaps make part of main.c?) 17 */ 18 19 #include "shell.h" 20 #include "exec.h" /* defines padvance() */ 21 #include "var.h" 22 #include "output.h" 23 #include "memalloc.h" 24 #include "error.h" 25 #include <sys/types.h> 26 #include <sys/stat.h> 27 28 29 #define MAXMBOXES 10 30 31 32 STATIC int nmboxes; /* number of mailboxes */ 33 STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 34 35 36 37 /* 38 * Print appropriate message(s) if mail has arrived. If the argument is 39 * nozero, then the value of MAIL has changed, so we just update the 40 * values. 41 */ 42 43 void 44 chkmail(silent) { 45 register int i; 46 char *mpath; 47 char *p; 48 register char *q; 49 struct stackmark smark; 50 struct stat statb; 51 52 if (silent) 53 nmboxes = 10; 54 if (nmboxes == 0) 55 return; 56 setstackmark(&smark); 57 mpath = mpathset()? mpathval() : mailval(); 58 for (i = 0 ; i < nmboxes ; i++) { 59 p = padvance(&mpath, nullstr); 60 if (p == NULL) 61 break; 62 if (*p == '\0') 63 continue; 64 for (q = p ; *q ; q++); 65 if (q[-1] != '/') 66 abort(); 67 q[-1] = '\0'; /* delete trailing '/' */ 68 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 69 if (stat(p, &statb) < 0) 70 statb.st_mtime = 0; 71 if (statb.st_mtime > mailtime[i] && ! silent) { 72 out2str(pathopt? pathopt : "you have mail"); 73 out2c('\n'); 74 } 75 mailtime[i] = statb.st_mtime; 76 #else /* this is what it should do */ 77 if (stat(p, &statb) < 0) 78 statb.st_size = 0; 79 if (statb.st_size > mailtime[i] && ! silent) { 80 out2str(pathopt? pathopt : "you have mail"); 81 out2c('\n'); 82 } 83 mailtime[i] = statb.st_size; 84 #endif 85 } 86 nmboxes = i; 87 popstackmark(&smark); 88 } 89