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src/lib/write-full.c
57 строк
1002 B
Michael M Slusarz
COPYING: Simplify and standardize copyright handling
03 июл 2026, 02:25
03 июл 2026, 02:25
2a5809c
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/* Copyright (c) Dovecot authors, see top-level COPYING file */ #include "lib.h" #include "write-full.h" #include <unistd.h> int write_full(int fd, const void *data, size_t size) { ssize_t ret; i_assert(size <= SSIZE_T_MAX); while (size > 0) { ret = write(fd, data, size); if (unlikely(ret < 0)) return -1; if (unlikely(ret == 0)) { /* nothing was written, only reason for this should be out of disk space */ errno = ENOSPC; return -1; } data = CONST_PTR_OFFSET(data, ret); size -= ret; } return 0; } int pwrite_full(int fd, const void *data, size_t size, off_t offset) { ssize_t ret; i_assert(size <= SSIZE_T_MAX); while (size > 0) { ret = pwrite(fd, data, size, offset); if (unlikely(ret < 0)) return -1; if (unlikely(ret == 0)) { /* nothing was written, only reason for this should be out of disk space */ errno = ENOSPC; return -1; } data = CONST_PTR_OFFSET(data, ret); size -= ret; offset += ret; } return 0; }