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author | Sven Eden <yamakuzure@gmx.net> | 2017-04-06 14:52:36 +0200 |
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committer | Sven Eden <yamakuzure@gmx.net> | 2017-04-26 12:59:13 +0200 |
commit | b96ed50e3493103d075ff2ce4c3fbad8f26b2e22 (patch) | |
tree | bd0603a28c62af0bb8c2ff479b9f411149561830 /src/basic/io-util.h | |
parent | 7684d7642ed3e667bfeb03abec840e394f8fed35 (diff) |
Prep v228: Add remaining updates from upstream (1/3)
The util.[hc] files have been stripped of a lot of functions, that
got sorted into various new files representing the type of
utility.
This commit adds the missing files.
Diffstat (limited to 'src/basic/io-util.h')
-rw-r--r-- | src/basic/io-util.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/basic/io-util.h b/src/basic/io-util.h new file mode 100644 index 000000000..cd2aa75ad --- /dev/null +++ b/src/basic/io-util.h @@ -0,0 +1,76 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#pragma once + +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <stdbool.h> +#include <sys/types.h> +#include <sys/uio.h> + +#include "time-util.h" + +int flush_fd(int fd); + +ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); +int loop_read_exact(int fd, void *buf, size_t nbytes, bool do_poll); +int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll); + +int pipe_eof(int fd); + +int fd_wait_for_event(int fd, int event, usec_t timeout); + +ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length); + +#define IOVEC_SET_STRING(i, s) \ + do { \ + struct iovec *_i = &(i); \ + char *_s = (char *)(s); \ + _i->iov_base = _s; \ + _i->iov_len = strlen(_s); \ + } while(false) + +static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) { + unsigned j; + size_t r = 0; + + for (j = 0; j < n; j++) + r += i[j].iov_len; + + return r; +} + +static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) { + unsigned j; + + for (j = 0; j < n; j++) { + size_t sub; + + if (_unlikely_(k <= 0)) + break; + + sub = MIN(i[j].iov_len, k); + i[j].iov_len -= sub; + i[j].iov_base = (uint8_t*) i[j].iov_base + sub; + k -= sub; + } + + return k; +} |