mirror of
https://github.com/nginx/nginx.git
synced 2025-07-26 07:06:55 +08:00
7138ca1704
*) Fixed spelling of "endianness", and called it "byte ordering" in the user visible part. *) Fixed return type of ngx_strerror_init(). *) Fixed a harmless error in spelling of "Connection: close" when computing the response header length. *) Style. *) Added code to look up Google perftools in /opt/local/, for MacPorts.
88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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/*
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* The strerror() messages are copied because:
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*
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* 1) strerror() and strerror_r() functions are not Async-Signal-Safe,
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* therefore, they cannot be used in signal handlers;
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*
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* 2) a direct sys_errlist[] array may be used instead of these functions,
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* but Linux linker warns about its usage:
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*
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* warning: `sys_errlist' is deprecated; use `strerror' or `strerror_r' instead
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* warning: `sys_nerr' is deprecated; use `strerror' or `strerror_r' instead
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*
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* causing false bug reports.
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*/
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static ngx_str_t *ngx_sys_errlist;
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static ngx_str_t ngx_unknown_error = ngx_string("Unknown error");
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u_char *
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ngx_strerror(ngx_err_t err, u_char *errstr, size_t size)
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{
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ngx_str_t *msg;
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msg = ((ngx_uint_t) err < NGX_SYS_NERR) ? &ngx_sys_errlist[err]:
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&ngx_unknown_error;
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size = ngx_min(size, msg->len);
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return ngx_cpymem(errstr, msg->data, size);
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}
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ngx_int_t
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ngx_strerror_init(void)
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{
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char *msg;
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u_char *p;
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size_t len;
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ngx_err_t err;
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/*
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* ngx_strerror() is not ready to work at this stage, therefore,
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* malloc() is used and possible errors are logged using strerror().
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*/
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len = NGX_SYS_NERR * sizeof(ngx_str_t);
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ngx_sys_errlist = malloc(len);
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if (ngx_sys_errlist == NULL) {
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goto failed;
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}
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for (err = 0; err < NGX_SYS_NERR; err++) {
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msg = strerror(err);
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len = ngx_strlen(msg);
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p = malloc(len);
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if (p == NULL) {
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goto failed;
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}
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ngx_memcpy(p, msg, len);
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ngx_sys_errlist[err].len = len;
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ngx_sys_errlist[err].data = p;
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}
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return NGX_OK;
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failed:
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err = errno;
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ngx_log_stderr(0, "malloc(%uz) failed (%d: %s)", len, err, strerror(err));
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return NGX_ERROR;
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}
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