diff options
-rw-r--r-- | libssh/channels.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libssh/channels.c b/libssh/channels.c index 6f1e3ee..229fe20 100644 --- a/libssh/channels.c +++ b/libssh/channels.c @@ -1838,7 +1838,8 @@ int channel_read_buffer(ssh_channel channel, ssh_buffer buffer, uint32_t count, * @param is_stderr A boolean value to mark reading from the stderr flow. * * @return The number of bytes read, 0 on end of file or SSH_ERROR on error. - * + * @warning This function may return less than count bytes of data, and won't + * block until count bytes have been read. * @warning The read function using a buffer has been renamed to * channel_read_buffer(). */ @@ -1876,9 +1877,10 @@ int channel_read(ssh_channel channel, void *dest, uint32_t count, int is_stderr) } } - /* block reading if asked bytes=0 */ - while (buffer_get_rest_len(stdbuf) == 0 || - buffer_get_rest_len(stdbuf) < count) { + /* block reading until at least one byte is read + * and ignore the trivial case count=0 + */ + while (buffer_get_rest_len(stdbuf) == 0 && count > 0) { if (channel->remote_eof && buffer_get_rest_len(stdbuf) == 0) { leave_function(); return 0; |