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 8.2 (Berkeley) 05/04/95"; 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 int silent; 46 { 47 register int i; 48 char *mpath; 49 char *p; 50 register char *q; 51 struct stackmark smark; 52 struct stat statb; 53 54 if (silent) 55 nmboxes = 10; 56 if (nmboxes == 0) 57 return; 58 setstackmark(&smark); 59 mpath = mpathset()? mpathval() : mailval(); 60 for (i = 0 ; i < nmboxes ; i++) { 61 p = padvance(&mpath, nullstr); 62 if (p == NULL) 63 break; 64 if (*p == '\0') 65 continue; 66 for (q = p ; *q ; q++); 67 if (q[-1] != '/') 68 abort(); 69 q[-1] = '\0'; /* delete trailing '/' */ 70 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 71 if (stat(p, &statb) < 0) 72 statb.st_mtime = 0; 73 if (statb.st_mtime > mailtime[i] && ! silent) { 74 out2str(pathopt? pathopt : "you have mail"); 75 out2c('\n'); 76 } 77 mailtime[i] = statb.st_mtime; 78 #else /* this is what it should do */ 79 if (stat(p, &statb) < 0) 80 statb.st_size = 0; 81 if (statb.st_size > mailtime[i] && ! silent) { 82 out2str(pathopt? pathopt : "you have mail"); 83 out2c('\n'); 84 } 85 mailtime[i] = statb.st_size; 86 #endif 87 } 88 nmboxes = i; 89 popstackmark(&smark); 90 } 91