blob: 0ba38a65d6aa4dfe41a70cd78e19468705af8dbe (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* ISC license. */
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <skalibs/direntry.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/djbunix.h>
#include "ftrig1.h"
#include <s6/ftrigw.h>
int ftrigw_notifyb_nosig (char const *path, char const *s, size_t len)
{
unsigned int i = 0 ;
DIR *dir = opendir(path) ;
if (!dir) return -1 ;
{
size_t pathlen = strlen(path) ;
char tmp[pathlen + FTRIG1_PREFIXLEN + 45] ;
memcpy(tmp, path, pathlen) ;
tmp[pathlen] = '/' ; tmp[pathlen + FTRIG1_PREFIXLEN + 44] = 0 ;
for (;;)
{
direntry *d ;
int fd ;
errno = 0 ;
d = readdir(dir) ;
if (!d) break ;
if (strncmp(d->d_name, FTRIG1_PREFIX, FTRIG1_PREFIXLEN)) continue ;
if (strlen(d->d_name) != FTRIG1_PREFIXLEN + 43) continue ;
memcpy(tmp + pathlen + 1, d->d_name, FTRIG1_PREFIXLEN + 43) ;
fd = open_write(tmp) ;
if (fd == -1)
{
if (errno == ENXIO) unlink(tmp) ;
}
else
{
ssize_t r = fd_write(fd, s, len) ;
if ((r < 0) || (size_t)r < len)
{
if (errno == EPIPE) unlink(tmp) ;
/* what to do if EGAIN ? full fifo -> fix the reader !
There's a race condition in extreme cases though ;
but it's still better to be nonblocking - the writer
shouldn't get in trouble because of a bad reader. */
fd_close(fd) ;
}
else
{
fd_close(fd) ;
i++ ;
}
}
}
}
{
int e = errno ;
dir_close(dir) ;
return e ? (errno = e, -1) : (int)i ;
}
}
|
