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authorRob Landley <rob@landley.net>2007-10-09 10:25:18 +0400
committerSam Ravnborg <sam@neptun.(none)>2007-10-18 15:42:53 +0400
commitbb13be5145e18cfb3a2f9cc6091aa048d032a3cd (patch)
tree641277a42d90f1a99506a71b646371b1bc2935c4 /scripts/basic
parent4b21960f90d4d011e49e386d0525b1e89f320658 (diff)
downloadlinux-bb13be5145e18cfb3a2f9cc6091aa048d032a3cd.tar.xz
kbuild: stop docproc segfaulting when SRCTREE isn't set.
Prevent docproc from segfaulting when SRCTREE isn't set. Signed-off-by: Rob Landley <rob@landley.net> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/basic')
-rw-r--r--scripts/basic/docproc.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
index e5c6ac7bde9b..0e4bd5459df4 100644
--- a/scripts/basic/docproc.c
+++ b/scripts/basic/docproc.c
@@ -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);