Mercurial > hg > nginx
view src/core/ngx_palloc.c @ 8009:a736a7a613ea
SSL: logging level of "application data after close notify".
Such fatal errors are reported by OpenSSL 1.1.1, and similarly by BoringSSL,
if application data is encountered during SSL shutdown, which started to be
observed on the second SSL_shutdown() call after SSL shutdown fixes made in
09fb2135a589 (1.19.2). The error means that the client continues to send
application data after receiving the "close_notify" alert (ticket #2318).
Previously it was reported as SSL_shutdown() error of SSL_ERROR_SYSCALL.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Tue, 08 Feb 2022 17:35:27 +0300 |
parents | ad2360782ecd |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> static ngx_inline void *ngx_palloc_small(ngx_pool_t *pool, size_t size, ngx_uint_t align); static void *ngx_palloc_block(ngx_pool_t *pool, size_t size); static void *ngx_palloc_large(ngx_pool_t *pool, size_t size); ngx_pool_t * ngx_create_pool(size_t size, ngx_log_t *log) { ngx_pool_t *p; p = ngx_memalign(NGX_POOL_ALIGNMENT, size, log); if (p == NULL) { return NULL; } p->d.last = (u_char *) p + sizeof(ngx_pool_t); p->d.end = (u_char *) p + size; p->d.next = NULL; p->d.failed = 0; size = size - sizeof(ngx_pool_t); p->max = (size < NGX_MAX_ALLOC_FROM_POOL) ? size : NGX_MAX_ALLOC_FROM_POOL; p->current = p; p->chain = NULL; p->large = NULL; p->cleanup = NULL; p->log = log; return p; } void ngx_destroy_pool(ngx_pool_t *pool) { ngx_pool_t *p, *n; ngx_pool_large_t *l; ngx_pool_cleanup_t *c; for (c = pool->cleanup; c; c = c->next) { if (c->handler) { ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "run cleanup: %p", c); c->handler(c->data); } } #if (NGX_DEBUG) /* * we could allocate the pool->log from this pool * so we cannot use this log while free()ing the pool */ for (l = pool->large; l; l = l->next) { ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); } for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) { ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p, unused: %uz", p, p->d.end - p->d.last); if (n == NULL) { break; } } #endif for (l = pool->large; l; l = l->next) { if (l->alloc) { ngx_free(l->alloc); } } for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) { ngx_free(p); if (n == NULL) { break; } } } void ngx_reset_pool(ngx_pool_t *pool) { ngx_pool_t *p; ngx_pool_large_t *l; for (l = pool->large; l; l = l->next) { if (l->alloc) { ngx_free(l->alloc); } } for (p = pool; p; p = p->d.next) { p->d.last = (u_char *) p + sizeof(ngx_pool_t); p->d.failed = 0; } pool->current = pool; pool->chain = NULL; pool->large = NULL; } void * ngx_palloc(ngx_pool_t *pool, size_t size) { #if !(NGX_DEBUG_PALLOC) if (size <= pool->max) { return ngx_palloc_small(pool, size, 1); } #endif return ngx_palloc_large(pool, size); } void * ngx_pnalloc(ngx_pool_t *pool, size_t size) { #if !(NGX_DEBUG_PALLOC) if (size <= pool->max) { return ngx_palloc_small(pool, size, 0); } #endif return ngx_palloc_large(pool, size); } static ngx_inline void * ngx_palloc_small(ngx_pool_t *pool, size_t size, ngx_uint_t align) { u_char *m; ngx_pool_t *p; p = pool->current; do { m = p->d.last; if (align) { m = ngx_align_ptr(m, NGX_ALIGNMENT); } if ((size_t) (p->d.end - m) >= size) { p->d.last = m + size; return m; } p = p->d.next; } while (p); return ngx_palloc_block(pool, size); } static void * ngx_palloc_block(ngx_pool_t *pool, size_t size) { u_char *m; size_t psize; ngx_pool_t *p, *new; psize = (size_t) (pool->d.end - (u_char *) pool); m = ngx_memalign(NGX_POOL_ALIGNMENT, psize, pool->log); if (m == NULL) { return NULL; } new = (ngx_pool_t *) m; new->d.end = m + psize; new->d.next = NULL; new->d.failed = 0; m += sizeof(ngx_pool_data_t); m = ngx_align_ptr(m, NGX_ALIGNMENT); new->d.last = m + size; for (p = pool->current; p->d.next; p = p->d.next) { if (p->d.failed++ > 4) { pool->current = p->d.next; } } p->d.next = new; return m; } static void * ngx_palloc_large(ngx_pool_t *pool, size_t size) { void *p; ngx_uint_t n; ngx_pool_large_t *large; p = ngx_alloc(size, pool->log); if (p == NULL) { return NULL; } n = 0; for (large = pool->large; large; large = large->next) { if (large->alloc == NULL) { large->alloc = p; return p; } if (n++ > 3) { break; } } large = ngx_palloc_small(pool, sizeof(ngx_pool_large_t), 1); if (large == NULL) { ngx_free(p); return NULL; } large->alloc = p; large->next = pool->large; pool->large = large; return p; } void * ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment) { void *p; ngx_pool_large_t *large; p = ngx_memalign(alignment, size, pool->log); if (p == NULL) { return NULL; } large = ngx_palloc_small(pool, sizeof(ngx_pool_large_t), 1); if (large == NULL) { ngx_free(p); return NULL; } large->alloc = p; large->next = pool->large; pool->large = large; return p; } ngx_int_t ngx_pfree(ngx_pool_t *pool, void *p) { ngx_pool_large_t *l; for (l = pool->large; l; l = l->next) { if (p == l->alloc) { ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); ngx_free(l->alloc); l->alloc = NULL; return NGX_OK; } } return NGX_DECLINED; } void * ngx_pcalloc(ngx_pool_t *pool, size_t size) { void *p; p = ngx_palloc(pool, size); if (p) { ngx_memzero(p, size); } return p; } ngx_pool_cleanup_t * ngx_pool_cleanup_add(ngx_pool_t *p, size_t size) { ngx_pool_cleanup_t *c; c = ngx_palloc(p, sizeof(ngx_pool_cleanup_t)); if (c == NULL) { return NULL; } if (size) { c->data = ngx_palloc(p, size); if (c->data == NULL) { return NULL; } } else { c->data = NULL; } c->handler = NULL; c->next = p->cleanup; p->cleanup = c; ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, p->log, 0, "add cleanup: %p", c); return c; } void ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd) { ngx_pool_cleanup_t *c; ngx_pool_cleanup_file_t *cf; for (c = p->cleanup; c; c = c->next) { if (c->handler == ngx_pool_cleanup_file) { cf = c->data; if (cf->fd == fd) { c->handler(cf); c->handler = NULL; return; } } } } void ngx_pool_cleanup_file(void *data) { ngx_pool_cleanup_file_t *c = data; ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d", c->fd); if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, ngx_close_file_n " \"%s\" failed", c->name); } } void ngx_pool_delete_file(void *data) { ngx_pool_cleanup_file_t *c = data; ngx_err_t err; ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d %s", c->fd, c->name); if (ngx_delete_file(c->name) == NGX_FILE_ERROR) { err = ngx_errno; if (err != NGX_ENOENT) { ngx_log_error(NGX_LOG_CRIT, c->log, err, ngx_delete_file_n " \"%s\" failed", c->name); } } if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, ngx_close_file_n " \"%s\" failed", c->name); } } #if 0 static void * ngx_get_cached_block(size_t size) { void *p; ngx_cached_block_slot_t *slot; if (ngx_cycle->cache == NULL) { return NULL; } slot = &ngx_cycle->cache[(size + ngx_pagesize - 1) / ngx_pagesize]; slot->tries++; if (slot->number) { p = slot->block; slot->block = slot->block->next; slot->number--; return p; } return NULL; } #endif