diff options
Diffstat (limited to 'security/selinux/ss/mls.c')
| -rw-r--r-- | security/selinux/ss/mls.c | 75 |
1 files changed, 37 insertions, 38 deletions
diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c index 3f2b2706b5bb..1ef8e4e89880 100644 --- a/security/selinux/ss/mls.c +++ b/security/selinux/ss/mls.c @@ -39,13 +39,13 @@ int mls_compute_context_len(struct context *context) struct ebitmap *e; struct ebitmap_node *node; - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return 0; len = 1; /* for the beginning ":" */ for (l = 0; l < 2; l++) { int index_sens = context->range.level[l].sens; - len += strlen(policydb.p_sens_val_to_name[index_sens - 1]); + len += strlen(sym_name(&policydb, SYM_LEVELS, index_sens - 1)); /* categories */ head = -2; @@ -55,17 +55,17 @@ int mls_compute_context_len(struct context *context) if (i - prev > 1) { /* one or more negative bits are skipped */ if (head != prev) { - nm = policydb.p_cat_val_to_name[prev]; + nm = sym_name(&policydb, SYM_CATS, prev); len += strlen(nm) + 1; } - nm = policydb.p_cat_val_to_name[i]; + nm = sym_name(&policydb, SYM_CATS, i); len += strlen(nm) + 1; head = i; } prev = i; } if (prev != head) { - nm = policydb.p_cat_val_to_name[prev]; + nm = sym_name(&policydb, SYM_CATS, prev); len += strlen(nm) + 1; } if (l == 0) { @@ -93,7 +93,7 @@ void mls_sid_to_context(struct context *context, struct ebitmap *e; struct ebitmap_node *node; - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return; scontextp = *scontext; @@ -102,8 +102,8 @@ void mls_sid_to_context(struct context *context, scontextp++; for (l = 0; l < 2; l++) { - strcpy(scontextp, - policydb.p_sens_val_to_name[context->range.level[l].sens - 1]); + strcpy(scontextp, sym_name(&policydb, SYM_LEVELS, + context->range.level[l].sens - 1)); scontextp += strlen(scontextp); /* categories */ @@ -118,7 +118,7 @@ void mls_sid_to_context(struct context *context, *scontextp++ = '.'; else *scontextp++ = ','; - nm = policydb.p_cat_val_to_name[prev]; + nm = sym_name(&policydb, SYM_CATS, prev); strcpy(scontextp, nm); scontextp += strlen(nm); } @@ -126,7 +126,7 @@ void mls_sid_to_context(struct context *context, *scontextp++ = ':'; else *scontextp++ = ','; - nm = policydb.p_cat_val_to_name[i]; + nm = sym_name(&policydb, SYM_CATS, i); strcpy(scontextp, nm); scontextp += strlen(nm); head = i; @@ -139,7 +139,7 @@ void mls_sid_to_context(struct context *context, *scontextp++ = '.'; else *scontextp++ = ','; - nm = policydb.p_cat_val_to_name[prev]; + nm = sym_name(&policydb, SYM_CATS, prev); strcpy(scontextp, nm); scontextp += strlen(nm); } @@ -166,7 +166,7 @@ int mls_level_isvalid(struct policydb *p, struct mls_level *l) if (!l->sens || l->sens > p->p_levels.nprim) return 0; levdatum = hashtab_search(p->p_levels.table, - p->p_sens_val_to_name[l->sens - 1]); + sym_name(p, SYM_LEVELS, l->sens - 1)); if (!levdatum) return 0; @@ -200,7 +200,7 @@ int mls_context_isvalid(struct policydb *p, struct context *c) { struct user_datum *usrdatum; - if (!selinux_mls_enabled) + if (!p->mls_enabled) return 1; if (!mls_range_isvalid(p, &c->range)) @@ -253,9 +253,9 @@ int mls_context_to_sid(struct policydb *pol, struct cat_datum *catdatum, *rngdatum; int l, rc = -EINVAL; - if (!selinux_mls_enabled) { + if (!pol->mls_enabled) { if (def_sid != SECSID_NULL && oldc) - *scontext += strlen(*scontext)+1; + *scontext += strlen(*scontext) + 1; return 0; } @@ -387,7 +387,7 @@ int mls_from_string(char *str, struct context *context, gfp_t gfp_mask) char *tmpstr, *freestr; int rc; - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return -EINVAL; /* we need freestr because mls_context_to_sid will change @@ -407,7 +407,7 @@ int mls_from_string(char *str, struct context *context, gfp_t gfp_mask) /* * Copies the MLS range `range' into `context'. */ -static inline int mls_range_set(struct context *context, +int mls_range_set(struct context *context, struct mls_range *range) { int l, rc = 0; @@ -427,7 +427,7 @@ static inline int mls_range_set(struct context *context, int mls_setup_user_range(struct context *fromcon, struct user_datum *user, struct context *usercon) { - if (selinux_mls_enabled) { + if (policydb.mls_enabled) { struct mls_level *fromcon_sen = &(fromcon->range.level[0]); struct mls_level *fromcon_clr = &(fromcon->range.level[1]); struct mls_level *user_low = &(user->range.level[0]); @@ -477,12 +477,13 @@ int mls_convert_context(struct policydb *oldp, struct ebitmap_node *node; int l, i; - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return 0; for (l = 0; l < 2; l++) { levdatum = hashtab_search(newp->p_levels.table, - oldp->p_sens_val_to_name[c->range.level[l].sens - 1]); + sym_name(oldp, SYM_LEVELS, + c->range.level[l].sens - 1)); if (!levdatum) return -EINVAL; @@ -493,7 +494,7 @@ int mls_convert_context(struct policydb *oldp, int rc; catdatum = hashtab_search(newp->p_cats.table, - oldp->p_cat_val_to_name[i]); + sym_name(oldp, SYM_CATS, i)); if (!catdatum) return -EINVAL; rc = ebitmap_set_bit(&bitmap, catdatum->value - 1, 1); @@ -513,23 +514,21 @@ int mls_compute_sid(struct context *scontext, u32 specified, struct context *newcontext) { - struct range_trans *rtr; + struct range_trans rtr; + struct mls_range *r; - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return 0; switch (specified) { case AVTAB_TRANSITION: /* Look for a range transition rule. */ - for (rtr = policydb.range_tr; rtr; rtr = rtr->next) { - if (rtr->source_type == scontext->type && - rtr->target_type == tcontext->type && - rtr->target_class == tclass) { - /* Set the range from the rule */ - return mls_range_set(newcontext, - &rtr->target_range); - } - } + rtr.source_type = scontext->type; + rtr.target_type = tcontext->type; + rtr.target_class = tclass; + r = hashtab_search(policydb.range_tr, &rtr); + if (r) + return mls_range_set(newcontext, r); /* Fallthrough */ case AVTAB_CHANGE: if (tclass == policydb.process_class) @@ -541,8 +540,8 @@ int mls_compute_sid(struct context *scontext, case AVTAB_MEMBER: /* Use the process effective MLS attributes. */ return mls_context_cpy_low(newcontext, scontext); - default: - return -EINVAL; + + /* fall through */ } return -EINVAL; } @@ -561,7 +560,7 @@ int mls_compute_sid(struct context *scontext, void mls_export_netlbl_lvl(struct context *context, struct netlbl_lsm_secattr *secattr) { - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return; secattr->attr.mls.lvl = context->range.level[0].sens - 1; @@ -581,7 +580,7 @@ void mls_export_netlbl_lvl(struct context *context, void mls_import_netlbl_lvl(struct context *context, struct netlbl_lsm_secattr *secattr) { - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return; context->range.level[0].sens = secattr->attr.mls.lvl + 1; @@ -603,7 +602,7 @@ int mls_export_netlbl_cat(struct context *context, { int rc; - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return 0; rc = ebitmap_netlbl_export(&context->range.level[0].cat, @@ -631,7 +630,7 @@ int mls_import_netlbl_cat(struct context *context, { int rc; - if (!selinux_mls_enabled) + if (!policydb.mls_enabled) return 0; rc = ebitmap_netlbl_import(&context->range.level[0].cat, |
