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udevtest: import uevent variables if possible

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This commit is contained in:
Kay Sievers 2007-04-06 19:18:33 +02:00
parent 81313e1b48
commit 68d4af11ca
1 changed files with 43 additions and 2 deletions
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45
udevtest.c
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@ -24,6 +24,7 @@
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <syslog.h>
#include <getopt.h>
@ -48,6 +49,45 @@ void log_message (int priority, const char *format, ...)
}
#endif
static int import_uevent_var(const char *devpath)
{
char path[PATH_SIZE];
static char value[4096]; /* must stay, used with putenv */
ssize_t size;
int fd;
char *key;
char *next;
int rc = -1;
/* read uevent file */
strlcpy(path, sysfs_path, sizeof(path));
strlcat(path, devpath, sizeof(path));
strlcat(path, "/uevent", sizeof(path));
fd = open(path, O_RDONLY);
if (fd < 0)
goto out;
size = read(fd, value, sizeof(value));
close(fd);
if (size < 0)
goto out;
value[size] = '\0';
/* import keys into environment */
key = value;
while (key[0] != '\0') {
next = strchr(key, '\n');
if (next == NULL)
goto out;
next[0] = '\0';
info("import into environment: '%s'", key);
putenv(key);
key = &next[1];
}
rc = 0;
out:
return rc;
}
int main(int argc, char *argv[], char *envp[])
{
int force = 0;
@ -142,10 +182,11 @@ int main(int argc, char *argv[], char *envp[])
setenv("DEVPATH", udev->dev->devpath, 1);
setenv("SUBSYSTEM", udev->dev->subsystem, 1);
setenv("ACTION", udev->action, 1);
import_uevent_var(udev->dev->devpath);
printf("This program is for debugging only, it does not run any program,\n"
"specified by a RUN key. It may show incorrect results, if rules\n"
"match against subsystem specfic kernel event variables.\n"
"specified by a RUN key. It may show incorrect results, because\n"
"some values may be different, or not available at a simulation run.\n"
"\n");
info("looking at device '%s' from subsystem '%s'", udev->dev->devpath, udev->dev->subsystem);