diff options
| -rw-r--r-- | arch/sandbox/cpu/start.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c index 5b7d548..01adaeb 100644 --- a/arch/sandbox/cpu/start.c +++ b/arch/sandbox/cpu/start.c @@ -9,13 +9,45 @@ #include <os.h> #include <cli.h> #include <malloc.h> +#include <sort.h> #include <asm/getopt.h> #include <asm/io.h> #include <asm/sections.h> #include <asm/state.h> +#include <linux/ctype.h> DECLARE_GLOBAL_DATA_PTR; +/* Compare two options so that they can be sorted into alphabetical order */ +static int h_compare_opt(const void *p1, const void *p2) +{ + const struct sandbox_cmdline_option *opt1 = p1; + const struct sandbox_cmdline_option *opt2 = p2; + const char *str1, *str2; + char flag1[2], flag2[2]; + + opt1 = *(struct sandbox_cmdline_option **)p1; + opt2 = *(struct sandbox_cmdline_option **)p2; + flag1[1] = '\0'; + flag2[1] = '\0'; + + *flag1 = opt1->flag_short < 0x100 ? opt1->flag_short : '\0'; + *flag2 = opt2->flag_short < 0x100 ? opt2->flag_short : '\0'; + + str1 = *flag1 ? flag1 : opt1->flag; + str2 = *flag2 ? flag2 : opt2->flag; + + /* + * Force lower-case flags to come before upper-case ones. We only + * support upper-case for short flags. + */ + if (isalpha(*str1) && isalpha(*str2) && + tolower(*str1) == tolower(*str2)) + return isupper(*str1) - isupper(*str2); + + return strcasecmp(str1, str2); +} + int sandbox_early_getopt_check(void) { struct sandbox_state *state = state_get_current(); @@ -23,6 +55,8 @@ int sandbox_early_getopt_check(void) size_t num_options = __u_boot_sandbox_option_count(); size_t i; int max_arg_len, max_noarg_len; + struct sandbox_cmdline_option **sorted_opt; + int size; /* parse_err will be a string of the faulting option */ if (!state->parse_err) @@ -45,8 +79,18 @@ int sandbox_early_getopt_check(void) max_arg_len = max((int)strlen(sb_opt[i]->flag), max_arg_len); max_noarg_len = max_arg_len + 7; + /* Sort the options */ + size = sizeof(*sorted_opt) * num_options; + sorted_opt = malloc(size); + if (!sorted_opt) { + printf("No memory to sort options\n"); + os_exit(1); + } + memcpy(sorted_opt, sb_opt, size); + qsort(sorted_opt, num_options, sizeof(*sorted_opt), h_compare_opt); + for (i = 0; i < num_options; ++i) { - struct sandbox_cmdline_option *opt = sb_opt[i]; + struct sandbox_cmdline_option *opt = sorted_opt[i]; /* first output the short flag if it has one */ if (opt->flag_short >= 0x100) |