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Commit 2a4d05a4 authored by Nick Kralevich's avatar Nick Kralevich
Browse files

implement LOG_EVENT_STRING 

Implement LOG_EVENT_STRING, so that native code can create new
event log entries. This is needed to support logging SELinux denials
to the event log.

Change-Id: I6a269a832bc2f5e5da6c9dbd169ed2f901b49166
parent 5a53ee05

include/log/log.h

+1 −1
Original line number Diff line number Diff line
@@ -491,7 +491,7 @@ typedef enum { 
#endif

#ifndef LOG_EVENT_STRING

#define LOG_EVENT_STRING(_tag, _value)                                      \

    ((void) 0)  /* not implemented -- must combine len with string */

        (void) __android_log_bswrite(_tag, _value);

#endif

/* TODO: something for LIST */

include/log/logd.h

+1 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ extern "C" { 
int __android_log_bwrite(int32_t tag, const void *payload, size_t len);

int __android_log_btwrite(int32_t tag, char type, const void *payload,

    size_t len);

int __android_log_bswrite(int32_t tag, const char *payload);



#ifdef __cplusplus

}

liblog/logd_write.c

+22 −0
Original line number Diff line number Diff line
@@ -473,3 +473,25 @@ int __android_log_btwrite(int32_t tag, char type, const void *payload, 


    return write_to_log(LOG_ID_EVENTS, vec, 3);

}



/*

 * Like __android_log_bwrite, but used for writing strings to the

 * event log.

 */

int __android_log_bswrite(int32_t tag, const char *payload)

{

    struct iovec vec[4];

    char type = EVENT_TYPE_STRING;

    uint32_t len = strlen(payload);



    vec[0].iov_base = &tag;

    vec[0].iov_len = sizeof(tag);

    vec[1].iov_base = &type;

    vec[1].iov_len = sizeof(type);

    vec[2].iov_base = &len;

    vec[2].iov_len = sizeof(len);

    vec[3].iov_base = (void*)payload;

    vec[3].iov_len = len;



    return write_to_log(LOG_ID_EVENTS, vec, 4);

}

liblog/logd_write_kern.c

+22 −0
Original line number Diff line number Diff line
@@ -317,3 +317,25 @@ int __android_log_btwrite(int32_t tag, char type, const void *payload, 


    return write_to_log(LOG_ID_EVENTS, vec, 3);

}



/*

 * Like __android_log_bwrite, but used for writing strings to the

 * event log.

 */

int __android_log_bswrite(int32_t tag, const char *payload)

{

    struct iovec vec[4];

    char type = EVENT_TYPE_STRING;

    uint32_t len = strlen(payload);



    vec[0].iov_base = &tag;

    vec[0].iov_len = sizeof(tag);

    vec[1].iov_base = &type;

    vec[1].iov_len = sizeof(type);

    vec[2].iov_base = &len;

    vec[2].iov_len = sizeof(len);

    vec[3].iov_base = (void*)payload;

    vec[3].iov_len = len;



    return write_to_log(LOG_ID_EVENTS, vec, 4);

}