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libblkio
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src/error-msg.c
34 строки
892 B
Stefan Hajnoczi
LICENSE: relicense to MIT OR APACHE-2.0
31 авг 2022, 18:43
31 авг 2022, 18:43
501476a
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// SPDX-License-Identifier: (MIT OR Apache-2.0) /* * Thread-local error message buffer. * * This is implemented in C with a static buffer since thread_local!() / * std::thread::LocalKey suffer from the problem described at * * https://lists.gnu.org/archive/html/qemu-block/2021-04/msg00828.html * * and the only Rust equivalent to thread_local is the unstable #[thread_local]: * * https://github.com/rust-lang/rust/issues/29594 */ #include <stddef.h> #include <string.h> #define MAX_ERROR_MSG_LEN 255 static _Thread_local char error_msg_buffer[MAX_ERROR_MSG_LEN + 1] = { 0 }; const char *blkio_get_error_msg_(void) { return error_msg_buffer; } void blkio_set_error_msg_(const char *msg, size_t msg_len) { if (msg_len > MAX_ERROR_MSG_LEN) msg_len = MAX_ERROR_MSG_LEN; memcpy(error_msg_buffer, msg, msg_len); error_msg_buffer[msg_len] = '\0'; }