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selinux: use sprintf return value

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sprintf returns the number of characters printed (excluding '\0'), so
we can use that and avoid duplicating the length computation.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
This commit is contained in:
Rasmus Villemoes 2015-10-21 17:44:27 -04:00 committed by Paul Moore
parent 21b76f199e
commit 9529c7886c
1 changed files with 1 additions and 4 deletions
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5
security/selinux/ss/services.c
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@ -1218,13 +1218,10 @@ static int context_struct_to_string(struct context *context, char **scontext, u3
/*
* Copy the user name, role name and type name into the context.
*/
sprintf(scontextp, "%s:%s:%s",
scontextp += sprintf(scontextp, "%s:%s:%s",
sym_name(&policydb, SYM_USERS, context->user - 1),
sym_name(&policydb, SYM_ROLES, context->role - 1),
sym_name(&policydb, SYM_TYPES, context->type - 1));
scontextp += strlen(sym_name(&policydb, SYM_USERS, context->user - 1)) +
1 + strlen(sym_name(&policydb, SYM_ROLES, context->role - 1)) +
1 + strlen(sym_name(&policydb, SYM_TYPES, context->type - 1));
mls_sid_to_context(context, &scontextp);