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solaris may return short reads on resolve.conf; fix from tor cvs via Nick Mathewson

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svn:r358
This commit is contained in:
Niels Provos 2007-05-28 21:09:00 +00:00
parent d0111a29e9
commit 5be24333ae
1 changed files with 10 additions and 5 deletions
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13
evdns.c
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@ -2649,7 +2649,7 @@ resolv_conf_parse_line(char *const start, int flags) {
int
evdns_resolv_conf_parse(int flags, const char *const filename) {
struct stat st;
int fd;
int fd, n, r;
u8 *resolv;
char *start;
int err = 0;
@ -2673,10 +2673,15 @@ evdns_resolv_conf_parse(int flags, const char *const filename) {
resolv = (u8 *) malloc((size_t)st.st_size + 1);
if (!resolv) { err = 4; goto out1; }
if (read(fd, resolv, (size_t)st.st_size) != st.st_size) {
err = 5; goto out2;
n = 0;
while ((r = read(fd, resolv+n, (size_t)st.st_size-n)) > 0) {
n += r;
if (n == st.st_size)
break;
assert(n < st.st_size);
}
resolv[st.st_size] = 0; // we malloced an extra byte
if (r < 0) { err = 5; goto out2; }
resolv[n] = 0; // we malloced an extra byte; this should be fine.
start = (char *) resolv;
for (;;) {