60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
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#include "lslib.h"
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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void setup_environment(const char *shell, bool new_env, bool clear_env, const struct passwd *pw) {
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if (!shell || !shell[0])
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shell = DEFAULT_SHELL;
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if (clear_env) {
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const char* term;
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term = getenv("TERM");
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clearenv();
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if (term)
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xsetenv("TERM", term);
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xsetenv("PATH", DEFAULT_PATH);
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}
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if (new_env) {
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xsetenv("USER", pw->pw_name);
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xsetenv("LOGNAME", pw->pw_name);
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xsetenv("HOME", pw->pw_dir);
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xsetenv("SHELL", shell);
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}
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}
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void exec_shell(const char *shell, bool loginshell, const char **additional_args) {
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const char** args;
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args = additional_args;
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while (args && *args)
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args++;
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args = xzalloc(sizeof(args[0]) * (2 + (args - additional_args)));
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if (!shell || !shell[0])
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shell = DEFAULT_SHELL;
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args[0] = get_last_component(shell);
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if (loginshell) {
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size_t len = strlen(shell) + 2;
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char* arg = xalloc(len);
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arg[0] = '-';
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memcpy(&arg[1], shell, len - 1);
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args[0] = arg;
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}
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if (additional_args) {
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int count = 0;
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while (*additional_args)
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args[++count] = *additional_args++;
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}
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execv(shell, (char**) args);
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error("cannot execute '%s'", shell);
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}
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