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(unix_bytes): read until the other side give us all or fail.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18794 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-10-21 21:09:14 +00:00
parent 0325e5dc59
commit 6968267966
1 changed files with 12 additions and 4 deletions
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16
lib/des/rand-unix.c
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@@ -87,7 +87,7 @@ unix_seed(const void *indata, int size)
static int static int
unix_bytes(unsigned char *outdata, int size) unix_bytes(unsigned char *outdata, int size)
{ {
ssize_t ret; ssize_t count;
int fd; int fd;
if (size <= 0) if (size <= 0)
@@ -97,10 +97,18 @@ unix_bytes(unsigned char *outdata, int size)
if (fd < 0) if (fd < 0)
return 0; return 0;
ret = read(fd, outdata, size); while (size > 0) {
count = read (fd, outdata, size);
if (count < 0 && errno == EINTR)
continue;
else if (count <= 0) {
close(fd);
return 0;
}
outdata += count;
size -= count;
}
close(fd); close(fd);
if (size != ret)
return 0;
return 1; return 1;
} }