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Commit bb13be51 authored by Rob Landley's avatar Rob Landley Committed by Sam Ravnborg
Browse files

kbuild: stop docproc segfaulting when SRCTREE isn't set. 



Prevent docproc from segfaulting when SRCTREE isn't set.

Signed-off-by: default avatarRob Landley <rob@landley.net>
Acked-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 4b21960f

scripts/basic/docproc.c

+9 −2
Original line number Diff line number Diff line
@@ -66,12 +66,15 @@ FILELINE * entity_system; 
#define FUNCTION      "-function"

#define NOFUNCTION    "-nofunction"



char *srctree;



void usage (void)

{

	fprintf(stderr, "Usage: docproc {doc|depend} file\n");

	fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");

	fprintf(stderr, "doc: frontend when generating kernel documentation\n");

	fprintf(stderr, "depend: generate list of files referenced within file\n");

	fprintf(stderr, "Environment variable SRCTREE: absolute path to kernel source tree.\n");

}



/*
@@ -90,7 +93,7 @@ void exec_kernel_doc(char **svec) 
			exit(1);

		case  0:

			memset(real_filename, 0, sizeof(real_filename));

			strncat(real_filename, getenv("SRCTREE"), PATH_MAX);

			strncat(real_filename, srctree, PATH_MAX);

			strncat(real_filename, KERNELDOCPATH KERNELDOC,

					PATH_MAX - strlen(real_filename));

			execvp(real_filename, svec);
@@ -171,7 +174,7 @@ void find_export_symbols(char * filename) 
	if (filename_exist(filename) == NULL) {

		char real_filename[PATH_MAX + 1];

		memset(real_filename, 0, sizeof(real_filename));

		strncat(real_filename, getenv("SRCTREE"), PATH_MAX);

		strncat(real_filename, srctree, PATH_MAX);

		strncat(real_filename, filename,

				PATH_MAX - strlen(real_filename));

		sym = add_new_file(filename);
@@ -338,6 +341,10 @@ void parse_file(FILE *infile) 
int main(int argc, char *argv[])

{

	FILE * infile;



	srctree = getenv("SRCTREE");

	if (!srctree)

		srctree = getcwd(NULL, 0);

	if (argc != 3) {

		usage();

		exit(1);