1 #include "mk.h" 2 #include <ar.h> 3 4 static void atimes(char *); 5 static char *split(char*, char**); 6 7 long 8 atimeof(int force, char *name) 9 { 10 Symtab *sym; 11 long t; 12 char *archive, *member, buf[512]; 13 14 archive = split(name, &member); 15 if(archive == 0) 16 Exit(); 17 18 t = mtime(archive); 19 sym = symlook(archive, S_AGG, 0); 20 if(sym){ 21 if(force || (t > (long)sym->value)){ 22 atimes(archive); 23 sym->value = (void *)t; 24 } 25 } 26 else{ 27 atimes(archive); 28 /* mark the aggegate as having been done */ 29 symlook(strdup(archive), S_AGG, "")->value = (void *)t; 30 } 31 /* truncate long member name to sizeof of name field in archive header */ 32 snprint(buf, sizeof(buf), "%s(%.*s)", archive, utfnlen(member, SARNAME), member); 33 sym = symlook(buf, S_TIME, 0); 34 if (sym) 35 return (long)sym->value; /* uggh */ 36 return 0; 37 } 38 39 void 40 atouch(char *name) 41 { 42 char *archive, *member; 43 int fd, i; 44 struct ar_hdr h; 45 long t; 46 47 archive = split(name, &member); 48 if(archive == 0) 49 Exit(); 50 51 fd = open(archive, ORDWR); 52 if(fd < 0){ 53 fd = create(archive, OWRITE, 0666); 54 if(fd < 0){ 55 perror(archive); 56 Exit(); 57 } 58 write(fd, ARMAG, SARMAG); 59 } 60 if(symlook(name, S_TIME, 0)){ 61 /* hoon off and change it in situ */ 62 LSEEK(fd, SARMAG, 0); 63 while(read(fd, (char *)&h, sizeof(h)) == sizeof(h)){ 64 for(i = SARNAME-1; i > 0 && h.name[i] == ' '; i--) 65 ; 66 h.name[i+1]=0; 67 if(strcmp(member, h.name) == 0){ 68 t = SARNAME-sizeof(h); /* ughgghh */ 69 LSEEK(fd, t, 1); 70 fprint(fd, "%-12ld", time(0)); 71 break; 72 } 73 t = atol(h.size); 74 if(t&01) t++; 75 LSEEK(fd, t, 1); 76 } 77 } 78 close(fd); 79 } 80 81 static void 82 atimes(char *ar) 83 { 84 struct ar_hdr h; 85 long t; 86 int fd, i; 87 char buf[BIGBLOCK]; 88 89 fd = open(ar, OREAD); 90 if(fd < 0) 91 return; 92 93 if(read(fd, buf, SARMAG) != SARMAG){ 94 close(fd); 95 return; 96 } 97 while(read(fd, (char *)&h, sizeof(h)) == sizeof(h)){ 98 t = atol(h.date); 99 if(t == 0) /* as it sometimes happens; thanks ken */ 100 t = 1; 101 for(i = sizeof(h.name)-1; i > 0 && h.name[i] == ' '; i--) 102 ; 103 if(h.name[i] == '/') /* system V bug */ 104 i--; 105 h.name[i+1]=0; /* can stomp on date field */ 106 sprint(buf, "%s(%s)", ar, h.name); 107 symlook(strdup(buf), S_TIME, (void *)t)->value = (void *)t; 108 t = atol(h.size); 109 if(t&01) t++; 110 LSEEK(fd, t, 1); 111 } 112 close(fd); 113 } 114 115 static int 116 type(char *file) 117 { 118 int fd; 119 char buf[SARMAG]; 120 121 fd = open(file, OREAD); 122 if(fd < 0){ 123 if(symlook(file, S_BITCH, 0) == 0){ 124 Bprint(&bout, "%s doesn't exist: assuming it will be an archive\n", file); 125 symlook(file, S_BITCH, (void *)file); 126 } 127 return 1; 128 } 129 if(read(fd, buf, SARMAG) != SARMAG){ 130 close(fd); 131 return 0; 132 } 133 close(fd); 134 return !strncmp(ARMAG, buf, SARMAG); 135 } 136 137 static char* 138 split(char *name, char **member) 139 { 140 char *p, *q; 141 142 p = strdup(name); 143 q = utfrune(p, '('); 144 if(q){ 145 *q++ = 0; 146 if(member) 147 *member = q; 148 q = utfrune(q, ')'); 149 if (q) 150 *q = 0; 151 if(type(p)) 152 return p; 153 free(p); 154 fprint(2, "mk: '%s' is not an archive\n", name); 155 } 156 return 0; 157 } 158