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authorRob Landley <rob@landley.net>2007-10-09 02:25:18 -0400
committerSam Ravnborg <sam@neptun.(none)>2007-10-18 07:42:53 -0400
commitbb13be5145e18cfb3a2f9cc6091aa048d032a3cd (patch)
tree641277a42d90f1a99506a71b646371b1bc2935c4 /scripts
parent4b21960f90d4d011e49e386d0525b1e89f320658 (diff)
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')
-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;
66#define FUNCTION "-function" 66#define FUNCTION "-function"
67#define NOFUNCTION "-nofunction" 67#define NOFUNCTION "-nofunction"
68 68
69char *srctree;
70
69void usage (void) 71void usage (void)
70{ 72{
71 fprintf(stderr, "Usage: docproc {doc|depend} file\n"); 73 fprintf(stderr, "Usage: docproc {doc|depend} file\n");
72 fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n"); 74 fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
73 fprintf(stderr, "doc: frontend when generating kernel documentation\n"); 75 fprintf(stderr, "doc: frontend when generating kernel documentation\n");
74 fprintf(stderr, "depend: generate list of files referenced within file\n"); 76 fprintf(stderr, "depend: generate list of files referenced within file\n");
77 fprintf(stderr, "Environment variable SRCTREE: absolute path to kernel source tree.\n");
75} 78}
76 79
77/* 80/*
@@ -90,7 +93,7 @@ void exec_kernel_doc(char **svec)
90 exit(1); 93 exit(1);
91 case 0: 94 case 0:
92 memset(real_filename, 0, sizeof(real_filename)); 95 memset(real_filename, 0, sizeof(real_filename));
93 strncat(real_filename, getenv("SRCTREE"), PATH_MAX); 96 strncat(real_filename, srctree, PATH_MAX);
94 strncat(real_filename, KERNELDOCPATH KERNELDOC, 97 strncat(real_filename, KERNELDOCPATH KERNELDOC,
95 PATH_MAX - strlen(real_filename)); 98 PATH_MAX - strlen(real_filename));
96 execvp(real_filename, svec); 99 execvp(real_filename, svec);
@@ -171,7 +174,7 @@ void find_export_symbols(char * filename)
171 if (filename_exist(filename) == NULL) { 174 if (filename_exist(filename) == NULL) {
172 char real_filename[PATH_MAX + 1]; 175 char real_filename[PATH_MAX + 1];
173 memset(real_filename, 0, sizeof(real_filename)); 176 memset(real_filename, 0, sizeof(real_filename));
174 strncat(real_filename, getenv("SRCTREE"), PATH_MAX); 177 strncat(real_filename, srctree, PATH_MAX);
175 strncat(real_filename, filename, 178 strncat(real_filename, filename,
176 PATH_MAX - strlen(real_filename)); 179 PATH_MAX - strlen(real_filename));
177 sym = add_new_file(filename); 180 sym = add_new_file(filename);
@@ -338,6 +341,10 @@ void parse_file(FILE *infile)
338int main(int argc, char *argv[]) 341int main(int argc, char *argv[])
339{ 342{
340 FILE * infile; 343 FILE * infile;
344
345 srctree = getenv("SRCTREE");
346 if (!srctree)
347 srctree = getcwd(NULL, 0);
341 if (argc != 3) { 348 if (argc != 3) {
342 usage(); 349 usage();
343 exit(1); 350 exit(1);