diff options
Diffstat (limited to 'src/libbasic/io-util.c')
| -rw-r--r-- | src/libbasic/io-util.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/libbasic/io-util.c b/src/libbasic/io-util.c index 3ec8d61236..cc6dfa8c1b 100644 --- a/src/libbasic/io-util.c +++ b/src/libbasic/io-util.c @@ -33,6 +33,11 @@ int flush_fd(int fd) { .events = POLLIN, }; + /* Read from the specified file descriptor, until POLLIN is not set anymore, throwing away everything + * read. Note that some file descriptors (notable IP sockets) will trigger POLLIN even when no data can be read + * (due to IP packet checksum mismatches), hence this function is only safe to be non-blocking if the fd used + * was set to non-blocking too. */ + for (;;) { char buf[LINE_MAX]; ssize_t l; @@ -249,7 +254,7 @@ ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length) { } else if (n > 0) q += n; else - q ++; + q++; } if (q > w) { |