1 24c02865 2005-01-04 devnull #include <u.h>
  2 24c02865 2005-01-04 devnull #include <libc.h>
  3 24c02865 2005-01-04 devnull #include <draw.h>
  4 24c02865 2005-01-04 devnull #include <event.h>
  5 24c02865 2005-01-04 devnull #include <bio.h>
  6 24c02865 2005-01-04 devnull #include "page.h"
  7 24c02865 2005-01-04 devnull 
  8 24c02865 2005-01-04 devnull void*
  9 24c02865 2005-01-04 devnull emalloc(int sz)
 10 24c02865 2005-01-04 devnull {
 11 24c02865 2005-01-04 devnull 	void *v;
 12 24c02865 2005-01-04 devnull 	v = malloc(sz);
 13 24c02865 2005-01-04 devnull 	if(v == nil) {
 14 24c02865 2005-01-04 devnull 		fprint(2, "out of memory allocating %d\n", sz);
 15 24c02865 2005-01-04 devnull 		wexits("mem");
 16 24c02865 2005-01-04 devnull 	}
 17 24c02865 2005-01-04 devnull 	memset(v, 0, sz);
 18 24c02865 2005-01-04 devnull 	return v;
 19 24c02865 2005-01-04 devnull }
 20 24c02865 2005-01-04 devnull 
 21 24c02865 2005-01-04 devnull void*
 22 24c02865 2005-01-04 devnull erealloc(void *v, int sz)
 23 24c02865 2005-01-04 devnull {
 24 24c02865 2005-01-04 devnull 	v = realloc(v, sz);
 25 24c02865 2005-01-04 devnull 	if(v == nil) {
 26 24c02865 2005-01-04 devnull 		fprint(2, "out of memory allocating %d\n", sz);
 27 24c02865 2005-01-04 devnull 		wexits("mem");
 28 24c02865 2005-01-04 devnull 	}
 29 24c02865 2005-01-04 devnull 	return v;
 30 24c02865 2005-01-04 devnull }
 31 24c02865 2005-01-04 devnull 
 32 24c02865 2005-01-04 devnull char*
 33 24c02865 2005-01-04 devnull estrdup(char *s)
 34 24c02865 2005-01-04 devnull {
 35 24c02865 2005-01-04 devnull 	char *t;
 36 24c02865 2005-01-04 devnull 	if((t = strdup(s)) == nil) {
 37 24c02865 2005-01-04 devnull 		fprint(2, "out of memory in strdup(%.10s)\n", s);
 38 24c02865 2005-01-04 devnull 		wexits("mem");
 39 24c02865 2005-01-04 devnull 	}
 40 24c02865 2005-01-04 devnull 	return t;
 41 24c02865 2005-01-04 devnull }
 42 24c02865 2005-01-04 devnull 
 43 24c02865 2005-01-04 devnull int
 44 24c02865 2005-01-04 devnull opentemp(char *template)
 45 24c02865 2005-01-04 devnull {
 46 24c02865 2005-01-04 devnull 	int fd, i;
 47 24c02865 2005-01-04 devnull 	char *p;
 48 24c02865 2005-01-04 devnull 
 49 24c02865 2005-01-04 devnull 	p = estrdup(template);
 50 24c02865 2005-01-04 devnull 	fd = -1;
 51 24c02865 2005-01-04 devnull 	for(i=0; i<10; i++){
 52 24c02865 2005-01-04 devnull 		mktemp(p);
 53 24c02865 2005-01-04 devnull 		if(access(p, 0) < 0 && (fd=create(p, ORDWR|ORCLOSE, 0400)) >= 0)
 54 24c02865 2005-01-04 devnull 			break;
 55 24c02865 2005-01-04 devnull 		strcpy(p, template);
 56 24c02865 2005-01-04 devnull 	}
 57 24c02865 2005-01-04 devnull 	if(fd < 0){
 58 24c02865 2005-01-04 devnull 		fprint(2, "couldn't make temporary file\n");
 59 24c02865 2005-01-04 devnull 		wexits("Ecreat");
 60 24c02865 2005-01-04 devnull 	}
 61 24c02865 2005-01-04 devnull 	strcpy(template, p);
 62 24c02865 2005-01-04 devnull 	free(p);
 63 24c02865 2005-01-04 devnull 
 64 24c02865 2005-01-04 devnull 	return fd;
 65 24c02865 2005-01-04 devnull }
 66 24c02865 2005-01-04 devnull 
 67 24c02865 2005-01-04 devnull /*
 68 24c02865 2005-01-04 devnull  * spool standard input to /tmp.
 69 24c02865 2005-01-04 devnull  * we've already read the initial in bytes into ibuf.
 70 24c02865 2005-01-04 devnull  */
 71 24c02865 2005-01-04 devnull int
 72 24c02865 2005-01-04 devnull spooltodisk(uchar *ibuf, int in, char **name)
 73 24c02865 2005-01-04 devnull {
 74 24c02865 2005-01-04 devnull 	uchar buf[8192];
 75 24c02865 2005-01-04 devnull 	int fd, n;
 76 24c02865 2005-01-04 devnull 	char temp[40];
 77 24c02865 2005-01-04 devnull 
 78 24c02865 2005-01-04 devnull 	strcpy(temp, "/tmp/pagespoolXXXXXXXXX");
 79 24c02865 2005-01-04 devnull 	fd = opentemp(temp);
 80 24c02865 2005-01-04 devnull 	if(name)
 81 24c02865 2005-01-04 devnull 		*name = estrdup(temp);
 82 24c02865 2005-01-04 devnull 
 83 24c02865 2005-01-04 devnull 	if(write(fd, ibuf, in) != in){
 84 24c02865 2005-01-04 devnull 		fprint(2, "error writing temporary file\n");
 85 24c02865 2005-01-04 devnull 		wexits("write temp");
 86 24c02865 2005-01-04 devnull 	}
 87 24c02865 2005-01-04 devnull 
 88 24c02865 2005-01-04 devnull 	while((n = read(stdinfd, buf, sizeof buf)) > 0){
 89 24c02865 2005-01-04 devnull 		if(write(fd, buf, n) != n){
 90 24c02865 2005-01-04 devnull 			fprint(2, "error writing temporary file\n");
 91 24c02865 2005-01-04 devnull 			wexits("write temp0");
 92 24c02865 2005-01-04 devnull 		}
 93 24c02865 2005-01-04 devnull 	}
 94 24c02865 2005-01-04 devnull 	seek(fd, 0, 0);
 95 24c02865 2005-01-04 devnull 	return fd;
 96 24c02865 2005-01-04 devnull }
 97 24c02865 2005-01-04 devnull 
 98 24c02865 2005-01-04 devnull /*
 99 24c02865 2005-01-04 devnull  * spool standard input into a pipe.
100 24c02865 2005-01-04 devnull  * we've already ready the first in bytes into ibuf
101 24c02865 2005-01-04 devnull  */
102 24c02865 2005-01-04 devnull int
103 24c02865 2005-01-04 devnull stdinpipe(uchar *ibuf, int in)
104 24c02865 2005-01-04 devnull {
105 24c02865 2005-01-04 devnull 	uchar buf[8192];
106 24c02865 2005-01-04 devnull 	int n;
107 24c02865 2005-01-04 devnull 	int p[2];
108 24c02865 2005-01-04 devnull 	if(pipe(p) < 0){
109 24c02865 2005-01-04 devnull 		fprint(2, "pipe fails: %r\n");	
110 24c02865 2005-01-04 devnull 		wexits("pipe");
111 24c02865 2005-01-04 devnull 	}
112 24c02865 2005-01-04 devnull 
113 24c02865 2005-01-04 devnull 	switch(rfork(RFPROC|RFFDG)){
114 24c02865 2005-01-04 devnull 	case -1:
115 24c02865 2005-01-04 devnull 		fprint(2, "fork fails: %r\n");
116 24c02865 2005-01-04 devnull 		wexits("fork");
117 24c02865 2005-01-04 devnull 	default:
118 24c02865 2005-01-04 devnull 		close(p[1]);
119 24c02865 2005-01-04 devnull 		return p[0];
120 24c02865 2005-01-04 devnull 	case 0:
121 24c02865 2005-01-04 devnull 		break;
122 24c02865 2005-01-04 devnull 	}
123 24c02865 2005-01-04 devnull 
124 24c02865 2005-01-04 devnull 	close(p[0]);
125 24c02865 2005-01-04 devnull 	write(p[1], ibuf, in);
126 24c02865 2005-01-04 devnull 	while((n = read(stdinfd, buf, sizeof buf)) > 0)
127 24c02865 2005-01-04 devnull 		write(p[1], buf, n);
128 24c02865 2005-01-04 devnull 
129 24c02865 2005-01-04 devnull 	_exits(0);
130 24c02865 2005-01-04 devnull 	return -1;	/* not reached */
131 24c02865 2005-01-04 devnull }