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swaybar: fix errno handling in status_handle_readable

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If getline fails once, it was not reset before the next getline
call. errno is only overwritten by getline on error.

(cherry picked from commit 414950bbc8)
This commit is contained in:
Simon Ser 2021-12-21 12:12:54 +01:00
parent 9ecbfe3665
commit 5d16d15a95
1 changed files with 1 additions and 1 deletions
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2
swaybar/status_line.c
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@ -117,11 +117,11 @@ bool status_handle_readable(struct status_line *status) {
status->text = status->buffer; status->text = status->buffer;
// intentional fall-through // intentional fall-through
case PROTOCOL_TEXT: case PROTOCOL_TEXT:
errno = 0;
while (true) { while (true) {
if (status->buffer[read_bytes - 1] == '\n') { if (status->buffer[read_bytes - 1] == '\n') {
status->buffer[read_bytes - 1] = '\0'; status->buffer[read_bytes - 1] = '\0';
} }
errno = 0;
read_bytes = getline(&status->buffer, read_bytes = getline(&status->buffer,
&status->buffer_size, status->read); &status->buffer_size, status->read);
if (errno == EAGAIN) { if (errno == EAGAIN) {