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*: introduce and use bb_unsetenv_and_free

Browse Source 
function                                             old     new   delta
bb_unsetenv_and_free                                   -      17     +17
tcpudpsvd_main                                      1819    1810      -9
safe_setenv                                           58      47     -11
udhcp_run_script                                     630     616     -14
make_device                                         1683    1663     -20
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(add/remove: 1/0 grow/shrink: 0/4 up/down: 17/-54)            Total: -37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-06-24 05:00:50 +02:00
parent da75f44844
commit dd8adde386
6 changed files with 11 additions and 10 deletions
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1
include/libbb.h
View File

@ -408,6 +408,7 @@ void xchdir(const char *path) FAST_FUNC;
void xchroot(const char *path) FAST_FUNC;
void xsetenv(const char *key, const char *value) FAST_FUNC;
void bb_unsetenv(const char *key) FAST_FUNC;
void bb_unsetenv_and_free(char *key) FAST_FUNC;
void xunlink(const char *pathname) FAST_FUNC;
void xstat(const char *pathname, struct stat *buf) FAST_FUNC;
int xopen(const char *pathname, int flags) FAST_FUNC;

5
libbb/xfuncs_printf.c
View File

@ -323,6 +323,11 @@ void FAST_FUNC bb_unsetenv(const char *var)
free(tp);
}
void FAST_FUNC bb_unsetenv_and_free(char *var)
{
bb_unsetenv(var);
free(var);
}
// Die with an error message if we can't set gid. (Because resource limits may
// limit this user to a given number of processes, and if that fills up the

3
miscutils/crond.c
View File

@ -264,8 +264,7 @@ static void safe_setenv(char **pvar_val, const char *var, const char *val)
char *var_val = *pvar_val;
if (var_val) {
bb_unsetenv(var_val);
free(var_val);
bb_unsetenv_and_free(var_val);
}
*pvar_val = xasprintf("%s=%s", var, val);
putenv(*pvar_val);

3
networking/tcpudp.c
View File

@ -85,8 +85,7 @@ static void undo_xsetenv(void)
char **pp = env_cur = &env_var[0];
while (*pp) {
char *var = *pp;
bb_unsetenv(var);
free(var);
bb_unsetenv_and_free(var);
*pp++ = NULL;
}
}

3
networking/udhcp/dhcpc.c
View File

@ -327,8 +327,7 @@ static void udhcp_run_script(struct dhcp_packet *packet, const char *name)
for (curr = envp; *curr; curr++) {
log2(" %s", *curr);
bb_unsetenv(*curr);
free(*curr);
bb_unsetenv_and_free(*curr);
}
free(envp);
}

6
util-linux/mdev.c
View File

@ -374,10 +374,8 @@ static void make_device(char *path, int delete)
putenv(s1);
if (system(command) == -1)
bb_perror_msg("can't run '%s'", command);
unsetenv("SUBSYSTEM");
free(s1);
unsetenv("MDEV");
free(s);
bb_unsetenv_and_free(s1);
bb_unsetenv_and_free(s);
free(command);
}