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udevadm: print warning to stderr if udevadm is called by symlink

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This commit is contained in:
Kay Sievers 2008-09-03 21:59:21 +02:00
parent 2b725651e5
commit 742f4cad0d
2 changed files with 35 additions and 30 deletions
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4
TODO
View File

@ -3,7 +3,9 @@ These things would be nice to have:
o rework rules to a match-action list, instead of a rules array
These things will change in future udev versions:
o --device-id-of-file will print '5:8' instead of '5 8'
These things are deprecated and scheduled for removal in a future udev version:
o DEVTYPE for disks is set by the kernel, remove it from the rules
o "udevadm control" commands will only accept the --<command> syntax
o symlink names to udevadm will no longer be resolved to old command names

61
udev/udevadm.c
View File

@ -120,49 +120,52 @@ static const struct command cmds[] = {
int main(int argc, char *argv[])
{
const char *command;
const char *command = argv[1];
int i;
const char *pos;
const struct command *cmd;
int rc;
/* get binary or symlink name */
pos = strrchr(argv[0], '/');
/* find command */
if (command != NULL)
for (i = 0; cmds[i].cmd != NULL; i++) {
if (strcmp(cmds[i].name, command) == 0) {
debug = cmds[i].debug;
rc = cmds[i].cmd(argc-1, &argv[1]);
goto out;
}
}
/* try to find compat link, will be removed in a future release */
command = argv[0];
pos = strrchr(command, '/');
if (pos != NULL)
command = &pos[1];
else
command = argv[0];
/* the trailing part of the binary or symlink name is the command */
/* the trailing part of the binary or link name is the command */
if (strncmp(command, "udev", 4) == 0)
command = &command[4];
if (command == NULL || command[0] == '\0')
goto err_unknown;
for (i = 0; cmds[i].cmd != NULL; i++) {
if (strcmp(cmds[i].name, command) == 0) {
char path[128];
char prog[512];
ssize_t len;
/* udevadm itself needs to strip its name from the passed options */
if (strcmp(command, "adm") == 0) {
command = argv[1];
argv++;
argc--;
}
if (command == NULL)
goto err_unknown;
/* allow command to be specified as an option */
if (strncmp(command, "--", 2) == 0)
command += 2;
/* find and execute command */
for (cmd = cmds; cmd->name != NULL; cmd++) {
if (strcmp(cmd->name, command) == 0) {
debug = cmd->debug;
rc = cmd->cmd(argc, argv);
snprintf(path, sizeof(path), "/proc/%lu/exe", (unsigned long) getppid());
len = readlink(path, prog, sizeof(prog));
if (len > 0) {
prog[len] = '\0';
fprintf(stderr, "the program '%s' called '%s', it should use 'udevadm %s <options>', "
"this will stop working in a future release\n", prog, argv[0], command);
info("the program '%s' called '%s', it should use 'udevadm %s <options>', "
"this will stop working in a future release\n", prog, argv[0], command);
}
debug = cmds[i].debug;
rc = cmds[i].cmd(argc, argv);
goto out;
}
}
err_unknown:
fprintf(stderr, "unknown command, try help\n\n");
rc = 2;
out: