diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/misc.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/misc.c b/lib/misc.c index 1d20e1b092..cd420a57d8 100644 --- a/lib/misc.c +++ b/lib/misc.c @@ -23,6 +23,7 @@ #include <fs.h> #include <string.h> #include <linux/ctype.h> +#include <getopt.h> /* * Like simple_strtoull() but handles an optional G, M, K or k @@ -129,3 +130,44 @@ success: return 0; } EXPORT_SYMBOL(parse_area_spec); + +/* + * Common function for parsing options for the 'md', 'mw', 'memcpy', 'memcmp' + * commands. + */ +int mem_parse_options(int argc, char *argv[], char *optstr, int *mode, + char **sourcefile, char **destfile, int *swab) +{ + int opt; + + while((opt = getopt(argc, argv, optstr)) > 0) { + switch(opt) { + case 'b': + *mode = O_RWSIZE_1; + break; + case 'w': + *mode = O_RWSIZE_2; + break; + case 'l': + *mode = O_RWSIZE_4; + break; + case 'q': + *mode = O_RWSIZE_8; + break; + case 's': + *sourcefile = optarg; + break; + case 'd': + *destfile = optarg; + break; + case 'x': + *swab = 1; + break; + default: + return -EINVAL; + } + } + + return 0; +} + |