diff options
| author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-08-06 02:55:41 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-08-06 02:55:41 +0000 |
| commit | e013475830b2399e31f5e17758dd6674b6b60058 (patch) | |
| tree | ad53b26765c6f24e4994402c3a0be899f16219e0 /coreutils | |
| parent | 84d71f33f5f0201e15bb07d523cef711cd8ef44f (diff) | |
| download | busybox-e013475830b2399e31f5e17758dd6674b6b60058.tar.gz | |
env: micro-optimization
printenv: fix "printenv VAR1 VAR2" bug (wasn't printing VAR2)
(spotted by kalyanatejaswi balabhadrapatruni <kalyanatejaswi@yahoo.co.in>)
env_main 267 260 -7
printenv_main 147 75 -72
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-79) Total: -79 bytes
text data bss dec hex filename
770336 1096 11228 782660 bf144 busybox_old
770256 1096 11228 782580 bf0f4 busybox_unstripped
Diffstat (limited to 'coreutils')
| -rw-r--r-- | coreutils/env.c | 2 | ||||
| -rw-r--r-- | coreutils/printenv.c | 23 |
2 files changed, 10 insertions, 15 deletions
diff --git a/coreutils/env.c b/coreutils/env.c index 31167d029..3008358ec 100644 --- a/coreutils/env.c +++ b/coreutils/env.c @@ -63,7 +63,7 @@ int env_main(int argc, char** argv) if (opt & 1) { cleanenv[0] = NULL; environ = cleanenv; - } else if (opt & 2) { + } else { while (unset_env) { unsetenv(unset_env->data); unset_env = unset_env->link; diff --git a/coreutils/printenv.c b/coreutils/printenv.c index 2531d5a23..19fa832c8 100644 --- a/coreutils/printenv.c +++ b/coreutils/printenv.c @@ -14,25 +14,20 @@ extern char **environ; int printenv_main(int argc, char **argv); int printenv_main(int argc, char **argv) { - int e = 0; - /* no variables specified, show whole env */ - if (argc == 1) + if (argc == 1) { + int e = 0; while (environ[e]) puts(environ[e++]); - - /* search for specified variables and print them out if found */ - else { - int i; - size_t l; + } else { + /* search for specified variables and print them out if found */ char *arg, *env; - for (i=1; (arg = argv[i]); ++i) - for (; (env = environ[e]); ++e) { - l = strlen(arg); - if (!strncmp(env, arg, l) && env[l] == '=') - puts(env + l + 1); - } + while ((arg = *++argv) != NULL) { + env = getenv(arg); + if (env) + puts(env); + } } fflush_stdout_and_exit(0); |