mirror of
https://gitlab.com/cryptsetup/cryptsetup.git
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4d1b67eeb2
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@618 36d66b0a-2a48-0410-832c-cd162a569da5
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
#include <libcryptsetup.h>
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#include <syslog.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "crypt_examples.h"
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#define LOG_PREFIX_CD "cslog_example_prefix"
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int log_ready = 0;
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/*
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* This is an example of function that can be registered using crypt_set_log_callback API.
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*
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* Its prototype is void (*log)(int level, const char *msg, void *usrptr) as defined
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* in crypt_set_log_callback
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*
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* NOTE: that some syslog message levels may not be visible with respect to your
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* syslog setings
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*
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* If your syslog daemon is turned off, messages should be printed to stderr
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*/
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static void simple_syslog_wrapper(int level, const char *msg, void *usrptr)
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{
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if(!log_ready) {
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openlog((char *)usrptr, LOG_CONS | LOG_PID, LOG_USER);
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log_ready = 1;
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}
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switch(level) {
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case CRYPT_LOG_NORMAL:
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syslog(LOG_NOTICE, msg);
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break;
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case CRYPT_LOG_ERROR:
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syslog(LOG_ERR, msg);
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break;
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case CRYPT_LOG_VERBOSE:
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syslog(LOG_INFO, msg);
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break;
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case CRYPT_LOG_DEBUG:
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syslog(LOG_DEBUG, msg);
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break;
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default:
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fprintf(stderr, "Unsupported log level requested!\n");
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}
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}
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int main(void)
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{
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int step = 0, r = 0;
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struct crypt_device *cd;
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if (geteuid())
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fprintf(stderr, "WARN: Process doesn't have super user privileges. "
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"Most of examples will fail because of that.\n");
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EX_STEP(++step, "crypt_init() to get an empty device context");
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if ((r = crypt_init(&cd, NULL))) {
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EX_FAIL("crypt_init() failed.");
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return r;
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}
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EX_SUCCESS("crypt_init() successfull");
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EX_STEP(++step, "crypt_set_log_callback() to register a log function tied with context");
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crypt_set_log_callback(cd, &simple_syslog_wrapper, LOG_PREFIX_CD);
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EX_SUCCESS("");
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EX_DELIM;
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EX_STEP(++step, "multiple crypt_log() to send messages into the context set log function. "
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"The messages should be prefixed with '" LOG_PREFIX_CD "'");
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crypt_log(cd, CRYPT_LOG_NORMAL, "This is normal log message");
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crypt_log(cd, CRYPT_LOG_ERROR, "This is error log message");
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crypt_log(cd, CRYPT_LOG_VERBOSE, "This is verbose log message");
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crypt_log(cd, CRYPT_LOG_DEBUG, "This is debug message");
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EX_SUCCESS("");
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EX_DELIM;
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crypt_free(cd);
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if (log_ready)
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closelog();
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log_ready = 0;
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EX_STEP(++step, "crypt_set_log_callback() to register a default (global) log function");
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crypt_set_log_callback(NULL, &simple_syslog_wrapper, NULL);
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EX_SUCCESS("");
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EX_DELIM;
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EX_STEP(++step, "multiple crypt_log() to send messages into default log");
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crypt_log(NULL, CRYPT_LOG_NORMAL, "This is normal log message");
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crypt_log(NULL, CRYPT_LOG_ERROR, "This is error log message");
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crypt_log(NULL, CRYPT_LOG_VERBOSE, "This is verbose log message");
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crypt_log(NULL, CRYPT_LOG_DEBUG, "This is debug message");
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EX_SUCCESS("");
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return r;
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}
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