[yocto] [PATCH 2/3] rmc: Enable reading the contents of an existing fingerprint file
Todor Minchev
todor.minchev at linux.intel.com
Mon Feb 6 14:28:29 PST 2017
On Mon, 2017-02-06 at 12:01 -0800, Jianxun Zhang wrote:
> Tudor,
> Please refer to my 3 inline comments.
>
> > On Feb 2, 2017, at 2:37 PM, Todor Minchev <todor.minchev at linux.intel.com> wrote:
> >
> > The contents of an existing fingerprint file can be read and output on
> > the command line with the following options:
> >
> > ./rmc -F -i input_fingerprint_file
> Suggest we have a new top option for dumping in parallel with -F to keep usages clear and simple for users.
We can use -E to extract both the database and the fingerprint?
rmc -E -d rmc.db
rmc -E -f rmc.fingerprint
> >
> > Signed-off-by: Todor Minchev <todor.minchev at linux.intel.com>
> > ---
> > src/rmc.c | 121 +++++++++++++++++++++++++++++++++++++++-----------------------
> > 1 file changed, 76 insertions(+), 45 deletions(-)
> >
> > diff --git a/src/rmc.c b/src/rmc.c
> > index 062dd36..a051ccf 100644
> > --- a/src/rmc.c
> > +++ b/src/rmc.c
> > @@ -14,33 +14,35 @@
> > #include <rmc_api.h>
> >
> > #define USAGE "RMC (Runtime Machine configuration) Tool\n" \
> > - "NOTE: Most of usages require root permission (sudo)\n" \
> > - "rmc -F [-o output_fingerprint]\n" \
> > + "NOTE: Most of usages require root permission (sudo)\n\n" \
> > + "rmc -F [-o output_fingerprint] | -i input_fingerprint\n" \
> > "rmc -R [-f <fingerprint file>] -b <blob file list> [-o output_record]\n" \
> > "rmc -D <rmc record file list> [-o output_database]\n" \
> > - "rmc -B <name of file blob> -d <rmc database file> -o output_file\n" \
> > - "\n" \
> > - "-F: generate board rmc fingerprint of board\n" \
> > - "-R: generate board rmc record of board with its fingerprint and file blobs.\n" \
> > - "-f: fingerprint file to be packed in record, rmc will create a fingerprint for board and use it internally to\n" \
> > - " generate record if -f is missed.\n" \
> > - "-b: files to be packed in record\n" \
> > - "-G: generate rmc database file with records specified in record file list\n" \
> > - "-B: get a flie blob with specified name associated to the board rmc is running on\n" \
> > - "-d: database file to be queried\n" \
> > - "-o: path and name of output file of a specific command\n" \
> > - "\n" \
> > - "Examples (Steps in an order to add board support into rmc):\n" \
> > - "generate board fingerprint:\n" \
> > - "rmc -F\n\n" \
> > - "generate a rmc record for the board with two file blobs, output to:\n" \
> > - "a specified file:\n" \
> > - "rmc -R -f fingerprint -b file_1 file_2 -o my_board.record\n\n" \
> > - "generate a rmc database file with records from 3 different boards:\n" \
> > - "rmc -D board1_record board2_record board3_record\n\n" \
> > - "query a file blob named audio.conf associated to the board rmc is running on in database my_rmc.db and output\n" \
> > - "to /tmp/new_audio.conf:\n" \
> > - "rmc -B audio.conf -d my_rmc.db -o /tmp/new_audio.conf\n\n"
> > + "rmc -B <name of file blob> -d <rmc database file> -o output_file\n\n" \
> > + "-F: manage fingerprint file\n" \
> > + "\t-o output_file: store RMC fingerprint of current board in output_file\n" \
> > + "\t-i input_file: print RMC fingerprint stored in input_file\n\n" \
> > + "-R: generate board rmc record of board with its fingerprint and file blobs.\n" \
> > + "\t-f intput_file : input fingerprint file to be packed in record\n\n" \
> > + "\tNOTE: RMC will create a fingerprint for the board and use it to\n" \
> > + "\tgenerate record if an input fingerprint file is not provided.\n\n" \
> > + "\t-b: files to be packed in record\n\n" \
> > + "-G: generate rmc database file with records specified in record file list\n\n" \
> > + "-B: get a file blob with specified name associated to the board rmc is\n" \
> > + "running on\n" \
> > + "\t-d: database file to be queried\n" \
> > + "\t-o: path and name of output file of a specific command\n\n" \
> > + "Examples (Steps in an order to add board support into rmc):\n\n" \
> > + "1. Generate board fingerprint:\n" \
> > + "\t./rmc -F\n\n” \
> Why do we force the rmc in current dir here? rmc can be installed to a system path like other programs.
Yes, this can be anywhere.
>
> > + "2. Generate a rmc record for the board with two file blobs and save it\n" \
> > + "to a specified file:\n" \
> > + "\t./rmc -R -f fingerprint -b file_1 file_2 -o my_board.record\n\n" \
> > + "3. Generate a rmc database file with records from 3 different boards:\n" \
> > + "\t./rmc -D board1_record board2_record board3_record\n\n" \
> > + "4. Query a file blob named audio.conf associated to the board rmc is\n" \
> > + "running on in database my_rmc.db and output to /tmp/new_audio.conf:\n" \
> > + "\t./rmc -B audio.conf -d my_rmc.db -o /tmp/new_audio.conf\n\n"
> >
> >
> > #define RMC_OPT_CAP_F (1 << 0)
> > @@ -51,6 +53,7 @@
> > #define RMC_OPT_O (1 << 5)
> > #define RMC_OPT_B (1 << 6)
> > #define RMC_OPT_D (1 << 7)
> > +#define RMC_OPT_I (1 << 8)
> >
> > static void usage () {
> > fprintf(stdout, USAGE);
> > @@ -78,7 +81,7 @@ static void dump_fingerprint(rmc_fingerprint_t *fp) {
> > static int write_fingerprint_file(const char* pathname, rmc_fingerprint_t *fp) {
> > int i;
> > int first = 0;
> > -
> > + /* TODO - do we need to open/close file multiple times to write each field */
> > for (i = 0; i < RMC_FINGER_NUM; i++) {
> > if (write_file(pathname, &fp->rmc_fingers[i].type, sizeof(fp->rmc_fingers[i].type), first))
> > return 1;
> > @@ -214,7 +217,6 @@ read_fp_done:
> > static rmc_file_t *read_policy_file(char *pathname, int type) {
> > rmc_file_t *tmp = NULL;
> > rmc_size_t policy_len = 0;
> > - int ret;
> Any reduction to this project is welcome!
>
> it’s just irrelevant for the purposes claimed in commit msg. Please have another patch for other improvements. (Well, I myself could have violated these rules too)
OK.. I will split this into its own commit.
>
> > char *path_token;
> >
> > if ((tmp = calloc(1, sizeof(rmc_file_t))) == NULL) {
> > @@ -226,8 +228,7 @@ static rmc_file_t *read_policy_file(char *pathname, int type) {
> > tmp->next = NULL;
> >
> > if (type == RMC_GENERIC_FILE) {
> > - ret = read_file(pathname, (char **)&tmp->blob, &policy_len);
> > - if (ret) {
> > + if (read_file(pathname, (char **)&tmp->blob, &policy_len)) {
> > fprintf(stderr, "Failed to read file %s\n\n", pathname);
> > free(tmp);
> > return NULL;
> > @@ -311,7 +312,7 @@ int main(int argc, char **argv){
> > /* parse options */
> > opterr = 0;
> >
> > - while ((c = getopt(argc, argv, "FRD:B:b:f:o:d:")) != -1)
> > + while ((c = getopt(argc, argv, "FRD:B:b:f:o:i:d:")) != -1)
> > switch (c) {
> > case 'F':
> > options |= RMC_OPT_CAP_F;
> > @@ -352,6 +353,10 @@ int main(int argc, char **argv){
> > output_path = optarg;
> > options |= RMC_OPT_O;
> > break;
> > + case 'i':
> > + input_fingerprint = optarg;
> > + options |= RMC_OPT_I;
> > + break;
> > case 'f':
> > input_fingerprint = optarg;
> > options |= RMC_OPT_F;
> > @@ -388,7 +393,8 @@ int main(int argc, char **argv){
> > break;
> > case '?':
> > if (optopt == 'F' || optopt == 'R' || optopt == 'D' || optopt == 'B' || \
> > - optopt == 'b' || optopt == 'f' || optopt == 'o' || optopt == 'd')
> > + optopt == 'b' || optopt == 'f' || optopt == 'o' || optopt == 'd' \
> > + || optopt == 'i')
> > fprintf(stderr, "\nWRONG USAGE: -%c\n\n", optopt);
> > else if (isprint(optopt))
> > fprintf(stderr, "Unknown option `-%c'.\n\n", optopt);
> > @@ -414,6 +420,15 @@ int main(int argc, char **argv){
> > }
> > }
> >
> > + /* sanity check for -i */
> > + if (options & RMC_OPT_I) {
> > + if (!(options & RMC_OPT_CAP_F)) {
> > + fprintf(stderr, "\nWRONG: Option -i cannot be applied without -F\n\n");
> > + usage();
> > + return 1;
> > + }
> > + }
> > +
> > /* sanity check for -R */
> > if ((options & RMC_OPT_CAP_R) && (!(options & RMC_OPT_B))) {
> > fprintf(stderr, "\nWRONG: -b is required when -R is present\n\n");
> > @@ -563,25 +578,41 @@ int main(int argc, char **argv){
> > }
> >
> > if (options & RMC_OPT_CAP_F) {
> > - /* set a default fingerprint file name if user didn't provide one */
> > - if (!output_path)
> > - output_path = "rmc.fingerprint";
> > + /* print fingerpring file to console*/
> > + if (options & RMC_OPT_I) {
> > + rmc_fingerprint_t fp;
> > + /* read fingerprint file*/
> > + if (input_fingerprint != NULL) {
> > + if (read_fingerprint_from_file(input_fingerprint, &fp, &raw_fp)) {
> > + fprintf(stderr, "Cannot read fingerprint from %s\n\n",
> > + input_fingerprint);
> > + goto main_free;
> > + }
> > + printf("Successfully read fingerprint from %s \n", input_fingerprint);
> > + dump_fingerprint(&fp);
> > + }else {
> > + printf("Fingerprint file not provided! Exiting.\n");
> > + }
> > + } else { /* generate fingerprint file for the current board*/
> > + /* set a default fingerprint file name if user didn't provide one */
> > + if (!output_path)
> > + output_path = "rmc.fingerprint";
> >
> > - if (rmc_get_fingerprint(&fingerprint)) {
> > - fprintf(stderr, "Cannot get board fingerprint\n");
> > - goto main_free;
> > - }
> > + if (rmc_get_fingerprint(&fingerprint)) {
> > + fprintf(stderr, "Cannot get board fingerprint\n");
> > + goto main_free;
> > + }
> >
> > - printf("Got Fingerprint for board:\n\n");
> > - dump_fingerprint(&fingerprint);
> > + printf("Got Fingerprint for board:\n\n");
> > + dump_fingerprint(&fingerprint);
> >
> > - if (write_fingerprint_file(output_path, &fingerprint)) {
> > - fprintf(stderr, "Cannot write board fingerprint to %s\n", output_path);
> > + if (write_fingerprint_file(output_path, &fingerprint)) {
> > + fprintf(stderr, "Cannot write board fingerprint to %s\n", output_path);
> > + rmc_free_fingerprint(&fingerprint);
> > + goto main_free;
> > + }
> > rmc_free_fingerprint(&fingerprint);
> > - goto main_free;
> > }
> > -
> > - rmc_free_fingerprint(&fingerprint);
> > }
> >
> > ret = 0;
> > --
> > 2.11.0
> >
>
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