/* Parse JSON files using the JSMN parser. */ /* * Copyright (c) 2014, Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include "jsmn.h" #include "json.h" #include static char *mapfile(const char *fn, size_t *size) { unsigned ps = sysconf(_SC_PAGESIZE); struct stat st; char *map = NULL; int err; int fd = open(fn, O_RDONLY); if (fd < 0 && verbose && fn) { pr_err("Error opening events file '%s': %s\n", fn, strerror(errno)); } if (fd < 0) return NULL; err = fstat(fd, &st); if (err < 0) goto out; *size = st.st_size; map = mmap(NULL, (st.st_size + ps - 1) & ~(ps - 1), PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0); if (map == MAP_FAILED) map = NULL; out: close(fd); return map; } static void unmapfile(char *map, size_t size) { unsigned ps = sysconf(_SC_PAGESIZE); munmap(map, roundup(size, ps)); } /* * Parse json file using jsmn. Return array of tokens, * and mapped file. Caller needs to free array. */ jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len) { jsmn_parser parser; jsmntok_t *tokens; jsmnerr_t res; unsigned sz; *map = mapfile(fn, size); if (!*map) return NULL; /* Heuristic */ sz = *size * 16; tokens = malloc(sz); if (!tokens) goto error; jsmn_init(&parser); res = jsmn_parse(&parser, *map, *size, tokens, sz / sizeof(jsmntok_t)); if (res != JSMN_SUCCESS) { pr_err("%s: json error %s\n", fn, jsmn_strerror(res)); goto error_free; } if (len) *len = parser.toknext; return tokens; error_free: free(tokens); error: unmapfile(*map, *size); return NULL; } void free_json(char *map, size_t size, jsmntok_t *tokens) { free(tokens); unmapfile(map, size); } static int countchar(char *map, char c, int end) { int i; int count = 0; for (i = 0; i < end; i++) if (map[i] == c) count++; return count; } /* Return line number of a jsmn token */ int json_line(char *map, jsmntok_t *t) { return countchar(map, '\n', t->start) + 1; } static const char * const jsmn_types[] = { [JSMN_PRIMITIVE] = "primitive", [JSMN_ARRAY] = "array", [JSMN_OBJECT] = "object", [JSMN_STRING] = "string" }; #define LOOKUP(a, i) ((i) < (sizeof(a)/sizeof(*(a))) ? ((a)[i]) : "?") /* Return type name of a jsmn token */ const char *json_name(jsmntok_t *t) { return LOOKUP(jsmn_types, t->type); } int json_len(jsmntok_t *t) { return t->end - t->start; } /* Is string t equal to s? */ int json_streq(char *map, jsmntok_t *t, const char *s) { unsigned len = json_len(t); return len == strlen(s) && !strncasecmp(map + t->start, s, len); } elect name='dt' onchange='this.form.submit();'>
authorVincent <vincent.stehle@laposte.net>2017-01-30 15:06:43 +0100
committerDavid S. Miller <davem@davemloft.net>2017-01-31 13:07:40 -0500
commitc73e44269369e936165f0f9b61f1f09a11dae01c (patch)
treee2188e900ba06302f8ed2746cb07edd3efbc5c35 /fs/Kconfig.binfmt
parent040587af31228d82c52267f717c9fcdb65f36335 (diff)
net: thunderx: avoid dereferencing xcv when NULL
This fixes the following smatch and coccinelle warnings: drivers/net/ethernet/cavium/thunder/thunder_xcv.c:119 xcv_setup_link() error: we previously assumed 'xcv' could be null (see line 118) [smatch] drivers/net/ethernet/cavium/thunder/thunder_xcv.c:119:16-20: ERROR: xcv is NULL but dereferenced. [coccinelle] Fixes: 6465859aba1e66a5 ("net: thunderx: Add RGMII interface type support") Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> Cc: Sunil Goutham <sgoutham@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/Kconfig.binfmt')