diff options
author | Brian Norris <computersforpeace@gmail.com> | 2011-06-22 09:49:23 -0700 |
---|---|---|
committer | Artem Bityutskiy <dedekind1@gmail.com> | 2011-06-23 17:57:55 +0300 |
commit | c01c7f05759e915d3b31b1530c0caadb11a447aa (patch) | |
tree | f4c99194dbe40bd61d8f263b17edeb25622b4ec8 /nanddump.c | |
parent | 40d253cb7b761de673877782f540aaed62bef86a (diff) |
nanddump: document, warn about future default --omitoob
To work as a proper inverse to nandwrite, nanddump must not dump OOB data by
default. This patch prints a warning regarding the future change. We also
suggest using the new flag, `--oob', for transitioning to the next release
with new default behavior.
Note that we are changing `-o' to mean `--oob' in the next release,
similar to `nandwrite -o'. This is a break from previous behavior.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
Diffstat (limited to 'nanddump.c')
-rw-r--r-- | nanddump.c | 34 |
1 files changed, 28 insertions, 6 deletions
@@ -53,8 +53,8 @@ static void display_help(void) "-f file --file=file Dump to file\n" "-l length --length=length Length\n" "-n --noecc Read without error correction\n" -"-o --omitoob Omit oob data\n" -" --oob Dump OOB data\n" +"-o --omitoob Omit OOB data (default in next release)\n" +" --oob Dump OOB data (current default)\n" "-p --prettyprint Print nice (hexdump)\n" "-q --quiet Don't display progress and status messages\n" "-s addr --startaddress=addr Start address\n" @@ -77,7 +77,14 @@ static void display_help(void) " and resume dumping at the next good block. However, with `omitbad', we\n" " count the bad block as part of the total dump length, whereas with\n" " `skipbad', the bad block is skipped, that is, not counted toward the\n" -" total dump length.\n", +" total dump length.\n" +"\n" +"Note on --oob, --omitoob:\n" +" To make nanddump act more like an inverse to nandwrite, we are changing\n" +" the default OOB behavior. In the next release, nanddump will not dump\n" +" OOB data by default. We will leave both the `--omitoob' and `--oob'\n" +" options, but to mirror nandwrite, the short option `-o' will then stand\n" +" for `--oob', not `--omitoob'. Please adjust your usage accordingly.\n", PROGRAM_NAME); exit(EXIT_SUCCESS); } @@ -119,7 +126,7 @@ static enum { static void process_options(int argc, char * const argv[]) { int error = 0; - bool bb_default = true; + bool bb_default = true, oob_default = true; for (;;) { int option_index = 0; @@ -171,7 +178,12 @@ static void process_options(int argc, char * const argv[]) bb_default = false; break; case 3: /* --oob */ - omitoob = false; + if (oob_default) { + oob_default = false; + omitoob = false; + } else { + errmsg_die("--oob and --oomitoob are mutually exclusive"); + } break; } break; @@ -200,7 +212,12 @@ static void process_options(int argc, char * const argv[]) length = simple_strtoll(optarg, &error); break; case 'o': - omitoob = true; + if (oob_default) { + oob_default = false; + omitoob = true; + } else { + errmsg_die("--oob and --oomitoob are mutually exclusive"); + } break; case 'a': forcebinary = true; @@ -259,6 +276,11 @@ static void process_options(int argc, char * const argv[]) " method. In future versions, the default will change to\n" " --bb=skipbad. Use \"nanddump --help\" for more information."); + if (oob_default) + warnmsg("in next release, nanddump will not dump OOB\n" + " by default. Use `nanddump --oob' explicitly to ensure\n" + " it is dumped."); + if ((argc - optind) != 1 || error) display_help(); |