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Final tidies, comments etc.

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This commit is contained in:
Patrick J Cherry
2018-02-09 11:42:25 +00:00
parent 195de41d86
commit 9817fd7b0a
2 changed files with 18 additions and 6 deletions
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14
tests/acceptance/ld_preloads/setsockopt_logger.c
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@@ -5,6 +5,10 @@
#include <stdlib.h>
#include <sys/socket.h>
/*
* Noddy LD_PRELOAD wrapper to catch setsockopt calls, and log them to a file.
*/
typedef int (*real_setsockopt_t)(int sockfd, int level, int optname, const void *optval, socklen_t optlen);
int real_setsockopt(int sockfd, int level, int optname, const void *optval, socklen_t optlen)
@@ -12,10 +16,6 @@ int real_setsockopt(int sockfd, int level, int optname, const void *optval, sock
return ((real_setsockopt_t)dlsym(RTLD_NEXT, "setsockopt"))(sockfd, level, optname, optval, optlen);
}
/*
* Noddy LD_PRELOAD wrapper to catch setsockopt calls, and log them to a file.
*/
int setsockopt(int sockfd, int level, int optname, const void *optval, socklen_t optlen)
{
FILE *fd;
@@ -24,9 +24,13 @@ int setsockopt(int sockfd, int level, int optname, const void *optval, socklen_t
retval = real_setsockopt(sockfd, level, optname, optval, optlen);
fn = getenv("OUTPUT_setsockopt_logger");
/*
* Only interested in catching non-null 4-byte (integer) values
*/
if ( fn != NULL && optval != NULL && optlen == 4) {
fd = fopen(fn,"a");
fprintf(fd,"setsockopt:%d:%d:%d:%i:%d\n", sockfd, level, optname, *(int *)optval, retval);
fprintf(fd,"setsockopt:%i:%i:%i:%i:%i\n", sockfd, level, optname, *(int *)optval, retval);
fclose(fd);
}