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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
int
libexec_unsetenv(struct libexec_command *cmd, const char *name)
{
char **env;
size_t i, n, len;
if (!cmd || !name) {
errno = EINVAL;
return -1;
}
if (strchr(name, '='))
return 0;
env = cmd->environ ? cmd->environ : environ;
len = strlen(name);
n = 0;
while (env[n])
n++;
for (i = 0; i < n;) {
if (!strncmp(env[i], name, len) && env[i][len] == '=') {
if (!cmd->environ) {
if (libexec_copy_environ(cmd, NULL))
return -1;
env = cmd->environ;
}
free(env[i]);
memmove(&env[i], &env[i + 1], (n - i - 1) * sizeof(*env));
n--;
} else {
i++;
}
}
return 0;
}
#else
LIBEXEC_CONST__ int main(void) {return 0;} /* TODO test */
#endif
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