diff options
Diffstat (limited to 'udev_utils.c')
| -rw-r--r-- | udev_utils.c | 64 |
1 files changed, 63 insertions, 1 deletions
diff --git a/udev_utils.c b/udev_utils.c index 37607492ac..4695ef0d72 100644 --- a/udev_utils.c +++ b/udev_utils.c @@ -27,6 +27,7 @@ #include <errno.h> #include <ctype.h> #include <dirent.h> +#include <sys/wait.h> #include <sys/stat.h> #include <sys/mman.h> #include <sys/utsname.h> @@ -38,7 +39,7 @@ #include "list.h" -int udev_init_device(struct udevice *udev, const char* devpath, const char *subsystem) +int udev_init_device(struct udevice *udev, const char* devpath, const char *subsystem, const char *action) { char *pos; @@ -317,3 +318,64 @@ int add_matching_files(struct list_head *name_list, const char *dirname, const c closedir(dir); return 0; } + +int execute_command(const char *command, const char *subsystem) +{ + int retval; + pid_t pid; + char arg[PATH_SIZE]; + char *argv[(PATH_SIZE / 2) + 1]; + char *pos; + int devnull; + int i; + + strlcpy(arg, command, sizeof(arg)); + i = 0; + if (strchr(arg, ' ')) { + pos = arg; + while (pos != NULL) { + if (pos[0] == '\'') { + /* don't separate if in apostrophes */ + pos++; + argv[i] = strsep(&pos, "\'"); + while (pos && pos[0] == ' ') + pos++; + } else { + argv[i] = strsep(&pos, " "); + } + dbg("arg[%i] '%s'", i, argv[i]); + i++; + } + argv[i] = NULL; + dbg("execute '%s' with parsed arguments", arg); + } else { + argv[0] = arg; + argv[1] = (char *) subsystem; + argv[2] = NULL; + dbg("execute '%s' with subsystem '%s' argument", arg, argv[1]); + } + + pid = fork(); + switch (pid) { + case 0: + /* child */ + devnull = open("/dev/null", O_RDWR); + if (devnull >= 0) { + dup2(devnull, STDIN_FILENO); + dup2(devnull, STDOUT_FILENO); + dup2(devnull, STDERR_FILENO); + close(devnull); + } + retval = execv(arg, argv); + err("exec of child failed"); + _exit(1); + case -1: + dbg("fork of child failed"); + break; + return -1; + default: + waitpid(pid, NULL, 0); + } + + return 0; +} |