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58 lines
1.2 KiB
58 lines
1.2 KiB
#include "cache.h" |
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#include "run-command.h" |
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#include <sys/wait.h> |
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int run_command_v(int argc, char **argv) |
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{ |
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pid_t pid = fork(); |
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if (pid < 0) |
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return -ERR_RUN_COMMAND_FORK; |
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if (!pid) { |
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execvp(argv[0], (char *const*) argv); |
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die("exec %s failed.", argv[0]); |
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} |
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for (;;) { |
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int status, code; |
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int retval = waitpid(pid, &status, 0); |
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if (retval < 0) { |
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if (errno == EINTR) |
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continue; |
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error("waitpid failed (%s)", strerror(retval)); |
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return -ERR_RUN_COMMAND_WAITPID; |
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} |
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if (retval != pid) |
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return -ERR_RUN_COMMAND_WAITPID_WRONG_PID; |
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if (WIFSIGNALED(status)) |
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return -ERR_RUN_COMMAND_WAITPID_SIGNAL; |
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if (!WIFEXITED(status)) |
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return -ERR_RUN_COMMAND_WAITPID_NOEXIT; |
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code = WEXITSTATUS(status); |
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if (code) |
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return -code; |
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return 0; |
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} |
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} |
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int run_command(const char *cmd, ...) |
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{ |
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int argc; |
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char *argv[MAX_RUN_COMMAND_ARGS]; |
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const char *arg; |
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va_list param; |
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va_start(param, cmd); |
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argv[0] = (char*) cmd; |
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argc = 1; |
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while (argc < MAX_RUN_COMMAND_ARGS) { |
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arg = argv[argc++] = va_arg(param, char *); |
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if (!arg) |
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break; |
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} |
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va_end(param); |
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if (MAX_RUN_COMMAND_ARGS <= argc) |
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return error("too many args to run %s", cmd); |
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return run_command_v(argc, argv); |
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}
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