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-rw-r--r--buildtools/pmdinfogen/pmdinfogen.c44
1 files changed, 36 insertions, 8 deletions
diff --git a/buildtools/pmdinfogen/pmdinfogen.c b/buildtools/pmdinfogen/pmdinfogen.c
index b07dbcf..45b2673 100644
--- a/buildtools/pmdinfogen/pmdinfogen.c
+++ b/buildtools/pmdinfogen/pmdinfogen.c
@@ -26,6 +26,7 @@
#define ADDR_SIZE 32
#endif
+static int use_stdin, use_stdout;
static const char *sym_name(struct elf_info *elf, Elf_Sym *sym)
{
@@ -39,11 +40,32 @@ static void *grab_file(const char *filename, unsigned long *size)
{
struct stat st;
void *map = MAP_FAILED;
- int fd;
+ int fd = -1;
+
+ if (!use_stdin) {
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ return NULL;
+ } else {
+ /* from stdin, use a temporary file to mmap */
+ FILE *infile;
+ char buffer[1024];
+ size_t n;
+
+ infile = tmpfile();
+ if (infile == NULL) {
+ perror("tmpfile");
+ return NULL;
+ }
+ while (!feof(stdin)) {
+ n = fread(buffer, 1, sizeof(buffer), stdin);
+ if (fwrite(buffer, 1, n, infile) != n)
+ goto failed;
+ }
+ fflush(infile);
+ fd = fileno(infile);
+ }
- fd = open(filename, O_RDONLY);
- if (fd < 0)
- return NULL;
if (fstat(fd, &st))
goto failed;
@@ -358,10 +380,14 @@ static void output_pmd_info_string(struct elf_info *info, char *outfile)
struct rte_pci_id *pci_ids;
int idx = 0;
- ofd = fopen(outfile, "w+");
- if (!ofd) {
- fprintf(stderr, "Unable to open output file\n");
- return;
+ if (use_stdout)
+ ofd = stdout;
+ else {
+ ofd = fopen(outfile, "w+");
+ if (!ofd) {
+ fprintf(stderr, "Unable to open output file\n");
+ return;
+ }
}
drv = info->drivers;
@@ -411,6 +437,8 @@ int main(int argc, char **argv)
basename(argv[0]));
exit(127);
}
+ use_stdin = !strcmp(argv[1], "-");
+ use_stdout = !strcmp(argv[2], "-");
parse_elf(&info, argv[1]);
if (locate_pmd_entries(&info) < 0)