Ignore SIGTERM during the vpp boot sequence - vpp

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author	Dave Barach <dave@barachs.net>	2019-03-21 18:01:48 -0400
committer	Florin Coras <florin.coras@gmail.com>	2019-03-21 23:17:51 +0000
commit	d1e17d00bb81659bf9e45caa62482bf7029d98f7 (patch)
tree	5f50c468a8638b79806da6d4d3dffdc670cd8a06 /src/vlib/buffer_funcs.h
parent	9e041b10ee3e6566c7e2ef0c581afafe57569e82 (diff)

Ignore SIGTERM during the vpp boot sequence

Call setjmp and mark the setjmp context valid just prior to entering the vpp main loop. Change-Id: I26d5cd6a624cb2a497d81eb85a62365621b3b469 Signed-off-by: Dave Barach <dave@barachs.net>

Diffstat (limited to 'src/vlib/buffer_funcs.h')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vlib/vlib.h> #include <vlib/lex.h> vlib_lex_main_t vlib_lex_main; #define LEX_DEBUG 0 u8 * format_vlib_lex_token (u8 * s, va_list * args) { vlib_lex_main_t *lm = va_arg (*args, vlib_lex_main_t *); vlib_lex_token_t *t = va_arg (*args, vlib_lex_token_t *); if (t->token == VLIB_LEX_word) s = format (s, "%s", t->value.as_pointer); else s = format (s, "%s", lm->lex_token_names[t->token]); return s; } void vlib_lex_get_token (vlib_lex_main_t * lm, vlib_lex_token_t * rv) { u8 c; vlib_lex_table_t *t; vlib_lex_table_entry_t *e; uword tv; if (PREDICT_FALSE (lm->pushback_sp >= 0)) { rv[0] = lm->pushback_vector[lm->pushback_sp--]; return; } rv->value.as_uword = ~0; while (1) { if (PREDICT_FALSE (lm->current_index >= vec_len (lm->input_vector))) { rv->token = VLIB_LEX_eof; return; } t = vec_elt_at_index (lm->lex_tables, lm->current_table_index); c = (lm->input_vector[lm->current_index++]) & 0x7f; e = &t->entries[c]; lm->current_table_index = e->next_table_index; switch (e->action) { case VLIB_LEX_IGNORE: continue; case VLIB_LEX_START_NUMBER: lm->current_token_value = 0; /* fallthru */ case VLIB_LEX_ADD_TO_NUMBER: lm->current_number_base = e->token; lm->current_token_value *= lm->current_number_base; tv = c - '0'; if (tv >= lm->current_number_base) { tv = 10 + c - 'A'; if (tv >= lm->current_number_base) tv = 10 + c - 'a'; } lm->current_token_value += tv; continue; case VLIB_LEX_ADD_TO_TOKEN: vec_add1 (lm->token_buffer, c); continue; case VLIB_LEX_KEYWORD_CHECK: { uword *p; vec_add1 (lm->token_buffer, 0); /* It's either a keyword or just a word. */ p = hash_get_mem (lm->lex_keywords, lm->token_buffer); if (p) { rv->token = p[0]; if (LEX_DEBUG > 0) clib_warning ("keyword '%s' token %s", lm->token_buffer, lm->lex_token_names[rv->token]); } else { /* it's a WORD */ rv->token = VLIB_LEX_word; rv->value.as_pointer = vec_dup (lm->token_buffer); if (LEX_DEBUG > 0) clib_warning ("%s, value '%s'", lm->lex_token_names[VLIB_LEX_word], rv->value.as_pointer); } vec_set_len (lm->token_buffer, 0); /* Rescan the character which terminated the keyword/word. */ lm->current_index--; return; } case VLIB_LEX_RETURN_AND_RESCAN: ASSERT (lm->current_index); lm->current_index--; /* note flow-through */ case VLIB_LEX_RETURN: rv->token = e->token; rv->value.as_uword = lm->current_token_value; lm->current_token_value = ~0; if (LEX_DEBUG > 0) { clib_warning ("table %s char '%c'(0x%02x) next table %s return %s", t->name, c, c, lm->lex_tables[e->next_table_index].name, lm->lex_token_names[e->token]); if (rv->token == VLIB_LEX_number) clib_warning (" numeric value 0x%x (%d)", rv->value, rv->value); } return; } } } u16 vlib_lex_add_token (vlib_lex_main_t * lm, char *token_name) { uword *p; u16 rv; p = hash_get_mem (lm->lex_tokens_by_name, token_name); if (p) return p[0]; rv = vec_len (lm->lex_token_names); hash_set_mem (lm->lex_tokens_by_name, token_name, rv); vec_add1 (lm->lex_token_names, token_name); return rv; } static u16 add_keyword (vlib_lex_main_t * lm, char *keyword, char *token_name) { uword *p; u16 token; p = hash_get_mem (lm->lex_keywords, keyword); ASSERT (p == 0); token = vlib_lex_add_token (lm, token_name); hash_set_mem (lm->lex_keywords, keyword, token); return token; } u16 vlib_lex_find_or_add_keyword (vlib_lex_main_t * lm, char *keyword, char *token_name) { uword *p = hash_get_mem (lm->lex_keywords, keyword); return p ? p[0] : add_keyword (lm, keyword, token_name); } void vlib_lex_set_action_range (u32 table_index, u8 lo, u8 hi, u16 action, u16 token, u32 next_table_index) { int i; vlib_lex_main_t *lm = &vlib_lex_main; vlib_lex_table_t *t = pool_elt_at_index (lm->lex_tables, table_index); for (i = lo; i <= hi; i++) { ASSERT (i < ARRAY_LEN (t->entries)); t->entries[i].action = action; t->entries[i].token = token; t->entries[i].next_table_index = next_table_index; } } u16 vlib_lex_add_table (char *name) { vlib_lex_main_t *lm = &vlib_lex_main; vlib_lex_table_t *t; uword *p; p = hash_get_mem (lm->lex_tables_by_name, name); ASSERT (p == 0); pool_get_aligned (lm->lex_tables, t, CLIB_CACHE_LINE_BYTES); t->name = name; hash_set_mem (lm->lex_tables_by_name, name, t - lm->lex_tables); vlib_lex_set_action_range (t - lm->lex_tables, 1, 0x7F, VLIB_LEX_IGNORE, ~0, t - lm->lex_tables); vlib_lex_set_action_range (t - lm->lex_tables, 0, 0, VLIB_LEX_RETURN, VLIB_LEX_eof, t - lm->lex_tables); return t - lm->lex_tables; } void vlib_lex_reset (vlib_lex_main_t * lm, u8 * input_vector) { if (lm->pushback_vector) vec_set_len (lm->pushback_vector, 0); lm->pushback_sp = -1; lm->input_vector = input_vector; lm->current_index = 0; } static clib_error_t * lex_onetime_init (vlib_main_t * vm) { vlib_lex_main_t *lm = &vlib_lex_main; lm->lex_tables_by_name = hash_create_string (0, sizeof (uword)); lm->lex_tokens_by_name = hash_create_string (0, sizeof (uword)); lm->lex_keywords = hash_create_string (0, sizeof (uword)); lm->pushback_sp = -1; #define _(f) { u16 tmp = vlib_lex_add_token (lm, #f); ASSERT (tmp == VLIB_LEX_##f); } foreach_vlib_lex_global_token; #undef _ vec_validate (lm->token_buffer, 127); vec_set_len (lm->token_buffer, 0); return 0; } VLIB_INIT_FUNCTION (lex_onetime_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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