cregit-Linux how code gets into the kernel

Release 4.8 net/netlabel/netlabel_kapi.c

Directory: net/netlabel
/*
 * NetLabel Kernel API
 *
 * This file defines the kernel API for the NetLabel system.  The NetLabel
 * system manages static and dynamic label mappings for network protocols such
 * as CIPSO and RIPSO.
 *
 * Author: Paul Moore <paul@paul-moore.com>
 *
 */

/*
 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
 *
 * This program is free software;  you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY;  without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 * the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program;  if not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <linux/init.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/audit.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/netlabel.h>
#include <net/cipso_ipv4.h>
#include <net/calipso.h>
#include <asm/bug.h>
#include <linux/atomic.h>

#include "netlabel_domainhash.h"
#include "netlabel_unlabeled.h"
#include "netlabel_cipso_v4.h"
#include "netlabel_calipso.h"
#include "netlabel_user.h"
#include "netlabel_mgmt.h"
#include "netlabel_addrlist.h"

/*
 * Configuration Functions
 */

/**
 * netlbl_cfg_map_del - Remove a NetLabel/LSM domain mapping
 * @domain: the domain mapping to remove
 * @family: address family
 * @addr: IP address
 * @mask: IP address mask
 * @audit_info: NetLabel audit information
 *
 * Description:
 * Removes a NetLabel/LSM domain mapping.  A @domain value of NULL causes the
 * default domain mapping to be removed.  Returns zero on success, negative
 * values on failure.
 *
 */

int netlbl_cfg_map_del(const char *domain, u16 family, const void *addr, const void *mask, struct netlbl_audit *audit_info) { if (addr == NULL && mask == NULL) { return netlbl_domhsh_remove(domain, family, audit_info); } else if (addr != NULL && mask != NULL) { switch (family) { case AF_INET: return netlbl_domhsh_remove_af4(domain, addr, mask, audit_info); #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: return netlbl_domhsh_remove_af6(domain, addr, mask, audit_info); #endif /* IPv6 */ default: return -EPFNOSUPPORT; } } else return -EINVAL; }

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paul moorepaul moore9277.97%250.00%
huw davieshuw davies2622.03%250.00%
Total118100.00%4100.00%

/** * netlbl_cfg_unlbl_map_add - Add a new unlabeled mapping * @domain: the domain mapping to add * @family: address family * @addr: IP address * @mask: IP address mask * @audit_info: NetLabel audit information * * Description: * Adds a new unlabeled NetLabel/LSM domain mapping. A @domain value of NULL * causes a new default domain mapping to be added. Returns zero on success, * negative values on failure. * */
int netlbl_cfg_unlbl_map_add(const char *domain, u16 family, const void *addr, const void *mask, struct netlbl_audit *audit_info) { int ret_val = -ENOMEM; struct netlbl_dom_map *entry; struct netlbl_domaddr_map *addrmap = NULL; struct netlbl_domaddr4_map *map4 = NULL; struct netlbl_domaddr6_map *map6 = NULL; entry = kzalloc(sizeof(*entry), GFP_ATOMIC); if (entry == NULL) return -ENOMEM; if (domain != NULL) { entry->domain = kstrdup(domain, GFP_ATOMIC); if (entry->domain == NULL) goto cfg_unlbl_map_add_failure; } entry->family = family; if (addr == NULL && mask == NULL) entry->def.type = NETLBL_NLTYPE_UNLABELED; else if (addr != NULL && mask != NULL) { addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC); if (addrmap == NULL) goto cfg_unlbl_map_add_failure; INIT_LIST_HEAD(&addrmap->list4); INIT_LIST_HEAD(&addrmap->list6); switch (family) { case AF_INET: { const struct in_addr *addr4 = addr; const struct in_addr *mask4 = mask; map4 = kzalloc(sizeof(*map4), GFP_ATOMIC); if (map4 == NULL) goto cfg_unlbl_map_add_failure; map4->def.type = NETLBL_NLTYPE_UNLABELED; map4->list.addr = addr4->s_addr & mask4->s_addr; map4->list.mask = mask4->s_addr; map4->list.valid = 1; ret_val = netlbl_af4list_add(&map4->list, &addrmap->list4); if (ret_val != 0) goto cfg_unlbl_map_add_failure; break; } #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: { const struct in6_addr *addr6 = addr; const struct in6_addr *mask6 = mask; map6 = kzalloc(sizeof(*map6), GFP_ATOMIC); if (map6 == NULL) goto cfg_unlbl_map_add_failure; map6->def.type = NETLBL_NLTYPE_UNLABELED; map6->list.addr = *addr6; map6->list.addr.s6_addr32[0] &= mask6->s6_addr32[0]; map6->list.addr.s6_addr32[1] &= mask6->s6_addr32[1]; map6->list.addr.s6_addr32[2] &= mask6->s6_addr32[2]; map6->list.addr.s6_addr32[3] &= mask6->s6_addr32[3]; map6->list.mask = *mask6; map6->list.valid = 1; ret_val = netlbl_af6list_add(&map6->list, &addrmap->list6); if (ret_val != 0) goto cfg_unlbl_map_add_failure; break; } #endif /* IPv6 */ default: goto cfg_unlbl_map_add_failure; } entry->def.addrsel = addrmap; entry->def.type = NETLBL_NLTYPE_ADDRSELECT; } else { ret_val = -EINVAL; goto cfg_unlbl_map_add_failure; } ret_val = netlbl_domhsh_add(entry, audit_info); if (ret_val != 0) goto cfg_unlbl_map_add_failure; return 0; cfg_unlbl_map_add_failure: kfree(entry->domain); kfree(entry); kfree(addrmap); kfree(map4); kfree(map6); return ret_val; }

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paul moorepaul moore55497.36%654.55%
huw davieshuw davies61.05%19.09%
alexey dobriyanalexey dobriyan40.70%19.09%
dan carpenterdan carpenter30.53%19.09%
eric dumazeteric dumazet10.18%19.09%
julia lawalljulia lawall10.18%19.09%
Total569100.00%11100.00%

/** * netlbl_cfg_unlbl_static_add - Adds a new static label * @net: network namespace * @dev_name: interface name * @addr: IP address in network byte order (struct in[6]_addr) * @mask: address mask in network byte order (struct in[6]_addr) * @family: address family * @secid: LSM secid value for the entry * @audit_info: NetLabel audit information * * Description: * Adds a new NetLabel static label to be used when protocol provided labels * are not present on incoming traffic. If @dev_name is NULL then the default * interface will be used. Returns zero on success, negative values on failure. * */
int netlbl_cfg_unlbl_static_add(struct net *net, const char *dev_name, const void *addr, const void *mask, u16 family, u32 secid, struct netlbl_audit *audit_info) { u32 addr_len; switch (family) { case AF_INET: addr_len = sizeof(struct in_addr); break; #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: addr_len = sizeof(struct in6_addr); break; #endif /* IPv6 */ default: return -EPFNOSUPPORT; } return netlbl_unlhsh_add(net, dev_name, addr, mask, addr_len, secid, audit_info); }

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paul moorepaul moore10099.01%266.67%
eric dumazeteric dumazet10.99%133.33%
Total101100.00%3100.00%

/** * netlbl_cfg_unlbl_static_del - Removes an existing static label * @net: network namespace * @dev_name: interface name * @addr: IP address in network byte order (struct in[6]_addr) * @mask: address mask in network byte order (struct in[6]_addr) * @family: address family * @audit_info: NetLabel audit information * * Description: * Removes an existing NetLabel static label used when protocol provided labels * are not present on incoming traffic. If @dev_name is NULL then the default * interface will be used. Returns zero on success, negative values on failure. * */
int netlbl_cfg_unlbl_static_del(struct net *net, const char *dev_name, const void *addr, const void *mask, u16 family, struct netlbl_audit *audit_info) { u32 addr_len; switch (family) { case AF_INET: addr_len = sizeof(struct in_addr); break; #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: addr_len = sizeof(struct in6_addr); break; #endif /* IPv6 */ default: return -EPFNOSUPPORT; } return netlbl_unlhsh_remove(net, dev_name, addr, mask, addr_len, audit_info); }

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paul moorepaul moore9598.96%266.67%
eric dumazeteric dumazet11.04%133.33%
Total96100.00%3100.00%

/** * netlbl_cfg_cipsov4_add - Add a new CIPSOv4 DOI definition * @doi_def: CIPSO DOI definition * @audit_info: NetLabel audit information * * Description: * Add a new CIPSO DOI definition as defined by @doi_def. Returns zero on * success and negative values on failure. * */
int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, struct netlbl_audit *audit_info) { return cipso_v4_doi_add(doi_def, audit_info); }

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paul moorepaul moore23100.00%1100.00%
Total23100.00%1100.00%

/** * netlbl_cfg_cipsov4_del - Remove an existing CIPSOv4 DOI definition * @doi: CIPSO DOI * @audit_info: NetLabel audit information * * Description: * Remove an existing CIPSO DOI definition matching @doi. Returns zero on * success and negative values on failure. * */
void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info) { cipso_v4_doi_remove(doi, audit_info); }

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paul moorepaul moore20100.00%1100.00%
Total20100.00%1100.00%

/** * netlbl_cfg_cipsov4_map_add - Add a new CIPSOv4 DOI mapping * @doi: the CIPSO DOI * @domain: the domain mapping to add * @addr: IP address * @mask: IP address mask * @audit_info: NetLabel audit information * * Description: * Add a new NetLabel/LSM domain mapping for the given CIPSO DOI to the NetLabel * subsystem. A @domain value of NULL adds a new default domain mapping. * Returns zero on success, negative values on failure. * */
int netlbl_cfg_cipsov4_map_add(u32 doi, const char *domain, const struct in_addr *addr, const struct in_addr *mask, struct netlbl_audit *audit_info) { int ret_val = -ENOMEM; struct cipso_v4_doi *doi_def; struct netlbl_dom_map *entry; struct netlbl_domaddr_map *addrmap = NULL; struct netlbl_domaddr4_map *addrinfo = NULL; doi_def = cipso_v4_doi_getdef(doi); if (doi_def == NULL) return -ENOENT; entry = kzalloc(sizeof(*entry), GFP_ATOMIC); if (entry == NULL) goto out_entry; entry->family = AF_INET; if (domain != NULL) { entry->domain = kstrdup(domain, GFP_ATOMIC); if (entry->domain == NULL) goto out_domain; } if (addr == NULL && mask == NULL) { entry->def.cipso = doi_def; entry->def.type = NETLBL_NLTYPE_CIPSOV4; } else if (addr != NULL && mask != NULL) { addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC); if (addrmap == NULL) goto out_addrmap; INIT_LIST_HEAD(&addrmap->list4); INIT_LIST_HEAD(&addrmap->list6); addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC); if (addrinfo == NULL) goto out_addrinfo; addrinfo->def.cipso = doi_def; addrinfo->def.type = NETLBL_NLTYPE_CIPSOV4; addrinfo->list.addr = addr->s_addr & mask->s_addr; addrinfo->list.mask = mask->s_addr; addrinfo->list.valid = 1; ret_val = netlbl_af4list_add(&addrinfo->list, &addrmap->list4); if (ret_val != 0) goto cfg_cipsov4_map_add_failure; entry->def.addrsel = addrmap; entry->def.type = NETLBL_NLTYPE_ADDRSELECT; } else { ret_val = -EINVAL; goto out_addrmap; } ret_val = netlbl_domhsh_add(entry, audit_info); if (ret_val != 0) goto cfg_cipsov4_map_add_failure; return 0; cfg_cipsov4_map_add_failure: kfree(addrinfo); out_addrinfo: kfree(addrmap); out_addrmap: kfree(entry->domain); out_domain: kfree(entry); out_entry: cipso_v4_doi_putdef(doi_def); return ret_val; }

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paul moorepaul moore36792.68%675.00%
julia lawalljulia lawall235.81%112.50%
huw davieshuw davies61.52%112.50%
Total396100.00%8100.00%

/** * netlbl_cfg_calipso_add - Add a new CALIPSO DOI definition * @doi_def: CALIPSO DOI definition * @audit_info: NetLabel audit information * * Description: * Add a new CALIPSO DOI definition as defined by @doi_def. Returns zero on * success and negative values on failure. * */
int netlbl_cfg_calipso_add(struct calipso_doi *doi_def, struct netlbl_audit *audit_info) { #if IS_ENABLED(CONFIG_IPV6) return calipso_doi_add(doi_def, audit_info); #else /* IPv6 */ return -ENOSYS; #endif /* IPv6 */ }

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huw davieshuw davies39100.00%1100.00%
Total39100.00%1100.00%

/** * netlbl_cfg_calipso_del - Remove an existing CALIPSO DOI definition * @doi: CALIPSO DOI * @audit_info: NetLabel audit information * * Description: * Remove an existing CALIPSO DOI definition matching @doi. Returns zero on * success and negative values on failure. * */
void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info) { #if IS_ENABLED(CONFIG_IPV6) calipso_doi_remove(doi, audit_info); #endif /* IPv6 */ }

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huw davieshuw davies29100.00%1100.00%
Total29100.00%1100.00%

/** * netlbl_cfg_calipso_map_add - Add a new CALIPSO DOI mapping * @doi: the CALIPSO DOI * @domain: the domain mapping to add * @addr: IP address * @mask: IP address mask * @audit_info: NetLabel audit information * * Description: * Add a new NetLabel/LSM domain mapping for the given CALIPSO DOI to the * NetLabel subsystem. A @domain value of NULL adds a new default domain * mapping. Returns zero on success, negative values on failure. * */
int netlbl_cfg_calipso_map_add(u32 doi, const char *domain, const struct in6_addr *addr, const struct in6_addr *mask, struct netlbl_audit *audit_info) { #if IS_ENABLED(CONFIG_IPV6) int ret_val = -ENOMEM; struct calipso_doi *doi_def; struct netlbl_dom_map *entry; struct netlbl_domaddr_map *addrmap = NULL; struct netlbl_domaddr6_map *addrinfo = NULL; doi_def = calipso_doi_getdef(doi); if (doi_def == NULL) return -ENOENT; entry = kzalloc(sizeof(*entry), GFP_ATOMIC); if (entry == NULL) goto out_entry; entry->family = AF_INET6; if (domain != NULL) { entry->domain = kstrdup(domain, GFP_ATOMIC); if (entry->domain == NULL) goto out_domain; } if (addr == NULL && mask == NULL) { entry->def.calipso = doi_def; entry->def.type = NETLBL_NLTYPE_CALIPSO; } else if (addr != NULL && mask != NULL) { addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC); if (addrmap == NULL) goto out_addrmap; INIT_LIST_HEAD(&addrmap->list4); INIT_LIST_HEAD(&addrmap->list6); addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC); if (addrinfo == NULL) goto out_addrinfo; addrinfo->def.calipso = doi_def; addrinfo->def.type = NETLBL_NLTYPE_CALIPSO; addrinfo->list.addr = *addr; addrinfo->list.addr.s6_addr32[0] &= mask->s6_addr32[0]; addrinfo->list.addr.s6_addr32[1] &= mask->s6_addr32[1]; addrinfo->list.addr.s6_addr32[2] &= mask->s6_addr32[2]; addrinfo->list.addr.s6_addr32[3] &= mask->s6_addr32[3]; addrinfo->list.mask = *mask; addrinfo->list.valid = 1; ret_val = netlbl_af6list_add(&addrinfo->list, &addrmap->list6); if (ret_val != 0) goto cfg_calipso_map_add_failure; entry->def.addrsel = addrmap; entry->def.type = NETLBL_NLTYPE_ADDRSELECT; } else { ret_val = -EINVAL; goto out_addrmap; } ret_val = netlbl_domhsh_add(entry, audit_info); if (ret_val != 0) goto cfg_calipso_map_add_failure; return 0; cfg_calipso_map_add_failure: kfree(addrinfo); out_addrinfo: kfree(addrmap); out_addrmap: kfree(entry->domain); out_domain: kfree(entry); out_entry: calipso_doi_putdef(doi_def); return ret_val; #else /* IPv6 */ return -ENOSYS; #endif /* IPv6 */ }

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huw davieshuw davies478100.00%1100.00%
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/* * Security Attribute Functions */ #define _CM_F_NONE 0x00000000 #define _CM_F_ALLOC 0x00000001 #define _CM_F_WALK 0x00000002 /** * _netlbl_catmap_getnode - Get a individual node from a catmap * @catmap: pointer to the category bitmap * @offset: the requested offset * @cm_flags: catmap flags, see _CM_F_* * @gfp_flags: memory allocation flags * * Description: * Iterate through the catmap looking for the node associated with @offset. * If the _CM_F_ALLOC flag is set in @cm_flags and there is no associated node, * one will be created and inserted into the catmap. If the _CM_F_WALK flag is * set in @cm_flags and there is no associated node, the next highest node will * be returned. Returns a pointer to the node on success, NULL on failure. * */
static struct netlbl_lsm_catmap *_netlbl_catmap_getnode( struct netlbl_lsm_catmap **catmap, u32 offset, unsigned int cm_flags, gfp_t gfp_flags) { struct netlbl_lsm_catmap *iter = *catmap; struct netlbl_lsm_catmap *prev = NULL; if (iter == NULL) goto catmap_getnode_alloc; if (offset < iter->startbit) goto catmap_getnode_walk; while (iter && offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) { prev = iter; iter = iter->next; } if (iter == NULL || offset < iter->startbit) goto catmap_getnode_walk; return iter; catmap_getnode_walk: if (cm_flags & _CM_F_WALK) return iter; catmap_getnode_alloc: if (!(cm_flags & _CM_F_ALLOC)) return NULL; iter = netlbl_catmap_alloc(gfp_flags); if (iter == NULL) return NULL; iter->startbit = offset & ~(NETLBL_CATMAP_SIZE - 1); if (prev == NULL) { iter->next = *catmap; *catmap = iter; } else { iter->next = prev->next; prev->next = iter; } return iter; }

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paul moorepaul moore197100.00%3100.00%
Total197100.00%3100.00%

/** * netlbl_catmap_walk - Walk a LSM secattr catmap looking for a bit * @catmap: the category bitmap * @offset: the offset to start searching at, in bits * * Description: * This function walks a LSM secattr category bitmap starting at @offset and * returns the spot of the first set bit or -ENOENT if no bits are set. * */
int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset) { struct netlbl_lsm_catmap *iter = catmap; u32 idx; u32 bit; NETLBL_CATMAP_MAPTYPE bitmap; iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0); if (iter == NULL) return -ENOENT; if (offset > iter->startbit) { offset -= iter->startbit; idx = offset / NETLBL_CATMAP_MAPSIZE; bit = offset % NETLBL_CATMAP_MAPSIZE; } else { idx = 0; bit = 0; } bitmap = iter->bitmap[idx] >> bit; for (;;) { if (bitmap != 0) { while ((bitmap & NETLBL_CATMAP_BIT) == 0) { bitmap >>= 1; bit++; } return iter->startbit + (NETLBL_CATMAP_MAPSIZE * idx) + bit; } if (++idx >= NETLBL_CATMAP_MAPCNT) { if (iter->next != NULL) { iter = iter->next; idx = 0; } else return -ENOENT; } bitmap = iter->bitmap[idx]; bit = 0; } return -ENOENT; }

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paul moorepaul moore201100.00%3100.00%
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EXPORT_SYMBOL(netlbl_catmap_walk); /** * netlbl_catmap_walkrng - Find the end of a string of set bits * @catmap: the category bitmap * @offset: the offset to start searching at, in bits * * Description: * This function walks a LSM secattr category bitmap starting at @offset and * returns the spot of the first cleared bit or -ENOENT if the offset is past * the end of the bitmap. * */
int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset) { struct netlbl_lsm_catmap *iter; struct netlbl_lsm_catmap *prev = NULL; u32 idx; u32 bit; NETLBL_CATMAP_MAPTYPE bitmask; NETLBL_CATMAP_MAPTYPE bitmap; iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0); if (iter == NULL) return -ENOENT; if (offset > iter->startbit) { offset -= iter->startbit; idx = offset / NETLBL_CATMAP_MAPSIZE; bit = offset % NETLBL_CATMAP_MAPSIZE; } else { idx = 0; bit = 0; } bitmask = NETLBL_CATMAP_BIT << bit; for (;;) { bitmap = iter->bitmap[idx]; while (bitmask != 0 && (bitmap & bitmask) != 0) { bitmask <<= 1; bit++; } if (prev && idx == 0 && bit == 0) return prev->startbit + NETLBL_CATMAP_SIZE - 1; else if (bitmask != 0) return iter->startbit + (NETLBL_CATMAP_MAPSIZE * idx) + bit - 1; else if (++idx >= NETLBL_CATMAP_MAPCNT) { if (iter->next == NULL) return iter->startbit + NETLBL_CATMAP_SIZE - 1; prev = iter; iter = iter->next; idx = 0; } bitmask = NETLBL_CATMAP_BIT; bit = 0; } return -ENOENT; }

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paul moorepaul moore241100.00%3100.00%
Total241100.00%3100.00%

/** * netlbl_catmap_getlong - Export an unsigned long bitmap * @catmap: pointer to the category bitmap * @offset: pointer to the requested offset * @bitmap: the exported bitmap * * Description: * Export a bitmap with an offset greater than or equal to @offset and return * it in @bitmap. The @offset must be aligned to an unsigned long and will be * updated on return if different from what was requested; if the catmap is * empty at the requested offset and beyond, the @offset is set to (u32)-1. * Returns zero on sucess, negative values on failure. * */
int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap, u32 *offset, unsigned long *bitmap) { struct netlbl_lsm_catmap *iter; u32 off = *offset; u32 idx; /* only allow aligned offsets */ if ((off & (BITS_PER_LONG - 1)) != 0) return -EINVAL; if (off < catmap->startbit) { off = catmap->startbit; *offset = off; } iter = _netlbl_catmap_getnode(&catmap, off, _CM_F_WALK, 0); if (iter == NULL) { *offset = (u32)-1; return 0; } if (off < iter->startbit) { *offset = iter->startbit; off = 0; } else off -= iter->startbit; idx = off / NETLBL_CATMAP_MAPSIZE; *bitmap = iter->bitmap[idx] >> (off % NETLBL_CATMAP_MAPSIZE); return 0; }

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paul moorepaul moore160100.00%5100.00%
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/** * netlbl_catmap_setbit - Set a bit in a LSM secattr catmap * @catmap: pointer to the category bitmap * @bit: the bit to set * @flags: memory allocation flags * * Description: * Set the bit specified by @bit in @catmap. Returns zero on success, * negative values on failure. * */
int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap, u32 bit, gfp_t flags) { struct netlbl_lsm_catmap *iter; u32 idx; iter = _netlbl_catmap_getnode(catmap, bit, _CM_F_ALLOC, flags); if (iter == NULL) return -ENOMEM; bit -= iter->startbit; idx = bit / NETLBL_CATMAP_MAPSIZE; iter->bitmap[idx] |= NETLBL_CATMAP_BIT << (bit % NETLBL_CATMAP_MAPSIZE); return 0; }

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paul moorepaul moore78100.00%3100.00%
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EXPORT_SYMBOL(netlbl_catmap_setbit); /** * netlbl_catmap_setrng - Set a range of bits in a LSM secattr catmap * @catmap: pointer to the category bitmap * @start: the starting bit * @end: the last bit in the string * @flags: memory allocation flags * * Description: * Set a range of bits, starting at @start and ending with @end. Returns zero * on success, negative values on failure. * */
int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap, u32 start, u32 end, gfp_t flags) { int rc = 0; u32 spot = start; while (rc == 0 && spot <= end) { if (((spot & (BITS_PER_LONG - 1)) == 0) && ((end - spot) > BITS_PER_LONG)) { rc = netlbl_catmap_setlong(catmap, spot,