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diff --git a/eject.c b/eject.c
index 4175756..057d2ea 100644
--- a/eject.c
+++ b/eject.c
@@ -42,6 +42,7 @@
#include <string.h>
#include <fcntl.h>
#include <limits.h>
+#include <dirent.h>
#ifdef GETOPTLONG
#include <getopt.h>
@@ -1133,6 +1134,145 @@ static char *MultiplePartitions(const char *name)
return 0;
}
+/*
+ * Find device name in /sys/block/. Returns NULL if not
+ * found. The returned pointer must be free()'d.
+ */
+static char* FindDeviceSysBlock(const char* deviceName)
+{
+ DIR *dir = opendir("/sys/block");
+ struct dirent *d;
+ const char *baseName = strrchr(deviceName, '/');
+ char *device;
+ int len;
+
+ baseName = baseName ? baseName + 1 : deviceName;
+ if (!dir) {
+ fprintf(stderr, _("%s: can not open directory /sys/block/"), programName);
+ return NULL;
+ }
+ while ((d = readdir(dir)) != NULL) {
+ if (d->d_type != DT_DIR && d->d_type != DT_LNK && d->d_type != DT_UNKNOWN)
+ continue;
+ len = strlen(d->d_name);
+ if (!strncmp(baseName, d->d_name, len)) {
+ if ((*(baseName+len) >= '0' &&
+ *(baseName+len) <= '9') ||
+ *(baseName+len) == '\0') {
+ device = strdup(d->d_name);
+ closedir(dir);
+ return device;
+ }
+ }
+ }
+ closedir(dir);
+ return NULL;
+}
+
+/*
+ * From given path gets a subsystem. Returns subsystem if any found
+ * otherwise returns NULL. Returned value must not be free()'d
+ */
+static char *GetSubSystem(const char *sysfspath)
+{
+ static char subsystem[PATH_MAX];
+ char link_subsystem[PATH_MAX];
+ struct stat buf;
+ char *pos;
+
+ snprintf(link_subsystem, sizeof(link_subsystem), "%s/subsystem", sysfspath);
+
+ if (lstat(link_subsystem, &buf) == -1)
+ return NULL;
+ if (!S_ISLNK(buf.st_mode))
+ return NULL;
+ if (readlink(link_subsystem, subsystem, sizeof(subsystem)) == -1)
+ return NULL;
+ if ((pos = strrchr(subsystem, '/')) == NULL)
+ return NULL;
+ strncpy(subsystem, pos+1, sizeof(subsystem));
+
+ return subsystem;
+}
+
+/*
+ * Check content of /sys/block/<dev>/removable. Returns 1 if the file
+ * contains '1' otherwise returns 0.
+ */
+static int CheckRemovable(const char* deviceName)
+{
+ FILE *fp;
+ int removable = 0;
+ char *device;
+ char path[PATH_MAX];
+
+ if ((device = FindDeviceSysBlock(deviceName)) == NULL) {
+ fprintf(stderr,
+ _("%s: did not find a device %s in /sys/block/\n"),
+ programName, deviceName);
+ exit(1);
+ }
+ snprintf(path, sizeof(path), "/sys/block/%s/removable", device);
+ free(device);
+ if((fp = fopen(path, "r")) == NULL)
+ return removable;
+ if (fgetc(fp) == '1')
+ removable = 1;
+
+ fclose(fp);
+ return removable;
+}
+
+/* Check if a device is on hotpluggable subsystem. Returns 1 if is
+ * otherwise returns 0.
+ */
+static int CheckHotpluggable(const char* deviceName)
+{
+ int hotpluggable = 0;
+ char *device;
+ char path[PATH_MAX];
+ char *device_chain;
+ struct stat buf;
+ char *subsystem;
+ char *pos;
+
+ if ((device = FindDeviceSysBlock(deviceName)) == NULL) {
+ fprintf(stderr, _("%s: did not find a device %s in /sys/block/\n"),
+ programName, deviceName);
+ exit(1);
+ }
+ snprintf(path, sizeof(path), "/sys/block/%s/device", device);
+ free(device);
+
+ if (lstat(path, &buf) == -1)
+ return hotpluggable;
+ if (!S_ISLNK(buf.st_mode))
+ return hotpluggable;
+ if ((device_chain = SymLink(path)) == NULL)
+ return hotpluggable;
+ while ( strncmp(device_chain, "", sizeof(device_chain) != 0)) {
+ subsystem = GetSubSystem(device_chain);
+ if (subsystem) {
+ /* as hotpluggable we assume devices on these buses */
+ if (strncmp("usb", subsystem, sizeof("usb")) == 0 ||
+ strncmp("ieee1394", subsystem, sizeof("ieee1394")) == 0 ||
+ strncmp("pcmcia", subsystem, sizeof("pcmcia")) == 0 ||
+ strncmp("mmc", subsystem, sizeof("mmc")) == 0 ||
+ strncmp("ccw", subsystem, sizeof("ccw")) == 0) {
+ hotpluggable = 1;
+ break;
+ }
+ }
+ /* remove one member from devicechain */
+ pos = strrchr(device_chain, '/');
+ if (pos)
+ pos[0] = '\0';
+ else
+ device_chain[0] = '\0';
+ }
+
+ return hotpluggable;
+}
/* handle -x option */
static void HandleXOption(char *deviceName)
@@ -1276,6 +1416,17 @@ int main(int argc, char **argv)
exit(0);
}
+ /* Check if device has removable flag*/
+ if (v_option)
+ printf(_("%s: checking if device \"%s\" has a removable or hotpluggable flag\n"),
+ programName, deviceName);
+ if (!CheckRemovable(deviceName) && !CheckHotpluggable(deviceName))
+ {
+ fprintf(stderr, _("%s: device \"%s\" doesn't have a removable or hotpluggable flag\n"),
+ programName, deviceName);
+ exit(1);
+ }
+
/* handle -i option */
if (i_option) {
fd = OpenDevice(deviceName);
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