Prevent docproc from segfaulting when SRCTREE isn't set.
Showing the changes to scripts/basic/docproc.c (1 of 1 file). Show all
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| @@ -66,12 +66,15 @@ FILELINE * entity_system; · 65 unmodified lines | ||
| 66 | 66 | #define FUNCTION "-function" |
| 67 | 67 | #define NOFUNCTION "-nofunction" |
| 68 | 68 | |
| 69 | +char *srctree; | |
| 70 | + | |
| 69 | 71 | void usage (void) |
| 70 | 72 | { |
| 71 | 73 | fprintf(stderr, "Usage: docproc {doc|depend} file\n"); |
| 72 | 74 | fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n"); |
| 73 | 75 | fprintf(stderr, "doc: frontend when generating kernel documentation\n"); |
| 74 | 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) · 12 unmodified lines | ||
| 90 | 93 | exit(1); |
| 91 | 94 | case 0: |
| 92 | 95 | memset(real_filename, 0, sizeof(real_filename)); |
| 93 | − strncat(real_filename, getenv("SRCTREE"), PATH_MAX); | |
| 96 | + strncat(real_filename, srctree, PATH_MAX); | |
| 94 | 97 | strncat(real_filename, KERNELDOCPATH KERNELDOC, |
| 95 | 98 | PATH_MAX - strlen(real_filename)); |
| 96 | 99 | execvp(real_filename, svec); |
| @@ -171,7 +174,7 @@ void find_export_symbols(char * filename) · 74 unmodified lines | ||
| 171 | 174 | if (filename_exist(filename) == NULL) { |
| 172 | 175 | char real_filename[PATH_MAX + 1]; |
| 173 | 176 | memset(real_filename, 0, sizeof(real_filename)); |
| 174 | − strncat(real_filename, getenv("SRCTREE"), PATH_MAX); | |
| 177 | + strncat(real_filename, srctree, PATH_MAX); | |
| 175 | 178 | strncat(real_filename, filename, |
| 176 | 179 | PATH_MAX - strlen(real_filename)); |
| 177 | 180 | sym = add_new_file(filename); |
| @@ -338,6 +341,10 @@ void parse_file(FILE *infile) · 160 unmodified lines | ||
| 338 | 341 | int main(int argc, char *argv[]) |
| 339 | 342 | { |
| 340 | 343 | FILE * infile; |
| 344 | + | |
| 345 | + srctree = getenv("SRCTREE"); | |
| 346 | + if (!srctree) | |
| 347 | + srctree = getcwd(NULL, 0); | |
| 341 | 348 | if (argc != 3) { |
| 342 | 349 | usage(); |
| 343 | 350 | exit(1); |