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Added getter for protected parameter

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This commit is contained in:
Cristian Toader 2013-07-18 18:11:47 +03:00
parent 673349c42e
commit e7e2efb717
2 changed files with 27 additions and 1 deletions
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27
src/common/sandbox.c
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@ -16,6 +16,7 @@
#include "sandbox.h"
#include "torlog.h"
#include "orconfig.h"
#include "torint.h"
#if defined(HAVE_SECCOMP_H) && defined(__linux__)
#define USE_LIBSECCOMP
@ -149,6 +150,30 @@ static int general_filter[] = {
SCMP_SYS(unlink)
};
char*
get_prot_param(char *param)
{
int i, filter_size;
if (param == NULL)
return NULL;
if (param_filter == NULL) {
filter_size = 0;
} else {
filter_size = sizeof(param_filter) / sizeof(param_filter[0]);
}
for (i = 0; i < filter_size; i++) {
if (param_filter[i].prot && !strncmp(param, param_filter[i].param,
MAX_PARAM_LEN)) {
return param_filter[i].param;
}
}
return NULL;
}
static int
add_param_filter(scmp_filter_ctx ctx)
{
@ -189,7 +214,7 @@ add_param_filter(scmp_filter_ctx ctx)
} // if not protected
rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, param_filter[i].syscall, 1,
param_filter[i].param);
SCMP_A0(SCMP_CMP_EQ, (intptr_t) param_filter[i].param));
if (rc != 0) {
log_err(LD_BUG,"(Sandbox) failed to add syscall index %d, "
"received libseccomp error %d", i, rc);

1
src/common/sandbox.h
View File

@ -58,6 +58,7 @@ typedef struct {
void sandbox_set_debugging_fd(int fd);
int tor_global_sandbox(void);
char* get_prot_param(char *param);
#endif /* SANDBOX_H_ */