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libselinux: sefcontext_compile: Add "-i" flag

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Adds the "-i" flag, which prints the version and
architecture identifier of the regular expression back end.

Signed-off-by: Janis Danisevskis <jdanis@android.com>
This commit is contained in:
Janis Danisevskis 2016-09-28 11:28:31 +01:00 committed by Stephen Smalley
parent 3b68c6f9e9
commit 487d652e71
1 changed files with 10 additions and 1 deletions
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11
libselinux/utils/sefcontext_compile.c
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@ -280,6 +280,11 @@ static void usage(const char *progname)
" (PCRE2 only. Compiled PCRE2 regular expressions are\n\t" " (PCRE2 only. Compiled PCRE2 regular expressions are\n\t"
" not portable across architectures. When linked against\n\t" " not portable across architectures. When linked against\n\t"
" PCRE this flag is ignored)\n\t" " PCRE this flag is ignored)\n\t"
"-i Print regular expression info end exit. That is, back\n\t"
" end version and architecture identifier.\n\t"
" Arch identifier format (PCRE2):\n\t"
" <pointer width>-<size type width>-<endianness>, e.g.,\n\t"
" \"8-8-el\" for x86_64.\n\t"
"fc_file The text based file contexts file to be processed.\n", "fc_file The text based file contexts file to be processed.\n",
progname); progname);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
@ -301,7 +306,7 @@ int main(int argc, char *argv[])
if (argc < 2) if (argc < 2)
usage(argv[0]); usage(argv[0]);
while ((opt = getopt(argc, argv, "o:p:r")) > 0) { while ((opt = getopt(argc, argv, "io:p:r")) > 0) {
switch (opt) { switch (opt) {
case 'o': case 'o':
out_file = optarg; out_file = optarg;
@ -312,6 +317,10 @@ int main(int argc, char *argv[])
case 'r': case 'r':
do_write_precompregex = 1; do_write_precompregex = 1;
break; break;
case 'i':
printf("%s (%s)\n", regex_version(),
regex_arch_string());
return 0;
default: default:
usage(argv[0]); usage(argv[0]);
} }