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Fix possible bug if file length not known

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This commit is contained in:
Glenn L McGrath 2002-12-13 04:14:36 +00:00
parent 02d7cbfe92
commit 3b33dd9b1e
1 changed files with 11 additions and 6 deletions
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17
networking/ftpgetput.c
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@ -56,14 +56,20 @@ typedef struct ftp_host_info_s {
static char verbose_flag;
static char do_continue = 0;
/* If chunksize == 0 read till end of file */
static int copyfd_chunk(int fd1, int fd2, off_t chunksize)
static int copyfd_chunk(int fd1, int fd2, const off_t chunksize)
{
size_t nread;
size_t nwritten;
size_t size;
size_t remaining;
char buffer[BUFSIZ];
if (chunksize) {
remaining = chunksize;
} else {
remaining = -1;
}
do {
if ((chunksize > BUFSIZ) || (chunksize == 0)) {
size = BUFSIZ;
@ -73,7 +79,7 @@ static int copyfd_chunk(int fd1, int fd2, off_t chunksize)
nread = safe_read(fd1, buffer, size);
if (nread < 0) {
if (nread <= 0) {
if (chunksize) {
perror_msg_and_die("read error");
} else {
@ -88,10 +94,9 @@ static int copyfd_chunk(int fd1, int fd2, off_t chunksize)
}
if (chunksize) {
chunksize -= nwritten;
remaining -= nwritten;
}
} while (chunksize);
} while (remaining != 0);
return 0;
}