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Diffstat (limited to 'lib/safe-write.h')
-rw-r--r-- | lib/safe-write.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/safe-write.h b/lib/safe-write.h new file mode 100644 index 000000000..51e3dcbba --- /dev/null +++ b/lib/safe-write.h @@ -0,0 +1,24 @@ +/* An interface to write() that retries after interrupts. + Copyright (C) 2002 Free Software Foundation, Inc. + + This program 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 3 of the License, or + (at your option) any later version. + + This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <stddef.h> + +#define SAFE_WRITE_ERROR ((size_t) -1) + +/* Write up to COUNT bytes at BUF to descriptor FD, retrying if interrupted. + Return the actual number of bytes written, zero for EOF, or SAFE_WRITE_ERROR + upon error. */ +extern size_t safe_write (int fd, const void *buf, size_t count); |