File hdparm-7.6-err_return.patch of Package hdparm

--- hdparm.c
+++ hdparm.c
@@ -281,17 +281,20 @@
 	}
 #endif
 	rc = ioctl(fd, BLKGETSIZE, &blksize32);	// returns sectors
-	if (rc)
+	if (rc) {
+		rc = errno;
 		perror(" BLKGETSIZE failed");
+	}
 	*blksize64 = blksize32;
 	return rc;
 }
 
-static void time_device (int fd)
+static int time_device (int fd)
 {
 	char *buf;
 	double elapsed;
 	struct itimerval e1, e2;
+	int err = 0;
 	unsigned int max_iterations = 1024, total_MB, iterations;
 
 	/*
@@ -300,12 +303,12 @@
 	if (do_ctimings || do_timings) {
 		unsigned long long blksize;
 		do_flush = 1;
-		if (0 == do_blkgetsize(fd, &blksize))
+		if (0 == (err = do_blkgetsize(fd, &blksize)))
 			max_iterations = blksize / (2 * 1024) / TIMING_BUF_MB;
 	}
 	buf = prepare_timing_buf(TIMING_BUF_BYTES);
 	if (!buf)
-		return;
+		return 1;
 
 	printf(" Timing %s disk reads:  ", (open_flags & O_DIRECT) ? "O_DIRECT" : "buffered");
 	fflush(stdout);
@@ -338,6 +341,7 @@
 quit:
 	munlockall();
 	munmap(buf, TIMING_BUF_BYTES);
+	return err;
 }
 
 static void dmpstr (const char *prefix, unsigned int i, const char *s[], unsigned int maxi)
@@ -789,21 +793,25 @@
 	}
 }
 
-static void flush_wcache (int fd, __u16 **id_p)
+static int flush_wcache (int fd, __u16 **id_p)
 {
 	__u8 args[4] = {ATA_OP_FLUSHCACHE,0,0,0};
 	__u16 *id;
+	int err = 0;
 
 	*id_p = id = get_identify_data(fd, *id_p);
 	if (id && (id[83] & 0xe000) == 0x6000)
 		args[0] = ATA_OP_FLUSHCACHE_EXT;
-	if (do_drive_cmd(fd, args))
+	if (do_drive_cmd(fd, args)) {
+		err = errno;
 		perror (" HDIO_DRIVE_CMD(flushcache) failed");
+	}
+	return err;
 }
 
 void process_dev (char *devname)
 {
-	int fd;
+	int fd, err = 0;
 	static long parm, multcount;
 	__u16 *id = (void *)-1;
 
@@ -819,14 +827,18 @@
 	if (set_fsreadahead) {
 		if (get_fsreadahead)
 			printf(" setting fs readahead to %d\n", fsreadahead);
-		if (ioctl(fd, BLKRASET, fsreadahead))
+		if (ioctl(fd, BLKRASET, fsreadahead)) {
+			err = errno;
 			perror(" BLKRASET failed");
+		}
 	}
 	if (set_unregister) {
 		if (get_unregister)
 			printf(" attempting to unregister hwif#%u\n", hwif);
-		if (ioctl(fd, HDIO_UNREGISTER_HWIF, hwif))
+		if (ioctl(fd, HDIO_UNREGISTER_HWIF, hwif)) {
+			err = errno;
 			perror(" HDIO_UNREGISTER_HWIF failed");
+		}
 	}
 	if (scan_hwif) {
 		int	args[3];
@@ -834,8 +846,10 @@
 		args[0] = hwif_data;
 		args[1] = hwif_ctrl;
 		args[2] = hwif_irq;
-		if (ioctl(fd, HDIO_SCAN_HWIF, args))
+		if (ioctl(fd, HDIO_SCAN_HWIF, args)) {
+			err = errno;
 			perror(" HDIO_SCAN_HWIF failed");
+		}
 	}
 	if (set_piomode) {
 		if (get_piomode) {
@@ -848,68 +862,86 @@
 			else
 				printf(" attempting to set UDMA mode to %d\n", (piomode-200));
 		}
-		if (ioctl(fd, HDIO_SET_PIO_MODE, piomode))
+		if (ioctl(fd, HDIO_SET_PIO_MODE, piomode)) {
+			err = errno;
 			perror(" HDIO_SET_PIO_MODE failed");
+		}
 	}
 	if (set_io32bit) {
 		if (get_io32bit)
 			printf(" setting 32-bit IO_support flag to %d\n", io32bit);
-		if (ioctl(fd, HDIO_SET_32BIT, io32bit))
+		if (ioctl(fd, HDIO_SET_32BIT, io32bit)) {
+			err = errno;
 			perror(" HDIO_SET_32BIT failed");
+		}
 	}
 	if (set_mult) {
 		if (get_mult)
 			printf(" setting multcount to %d\n", mult);
-		if (ioctl(fd, HDIO_SET_MULTCOUNT, mult))
+		if (ioctl(fd, HDIO_SET_MULTCOUNT, mult)) {
+			err = errno;
 			perror(" HDIO_SET_MULTCOUNT failed");
+		}
 	}
 	if (set_readonly) {
 		if (get_readonly) {
 			printf(" setting readonly to %d", readonly);
 			on_off(readonly);
 		}
-		if (ioctl(fd, BLKROSET, &readonly))
+		if (ioctl(fd, BLKROSET, &readonly)) {
+			err = errno;
 			perror(" BLKROSET failed");
+		}
 	}
 	if (set_unmask) {
 		if (get_unmask) {
 			printf(" setting unmaskirq to %d", unmask);
 			on_off(unmask);
 		}
-		if (ioctl(fd, HDIO_SET_UNMASKINTR, unmask))
+		if (ioctl(fd, HDIO_SET_UNMASKINTR, unmask)) {
+			err = errno;
 			perror(" HDIO_SET_UNMASKINTR failed");
+		}
 	}
 	if (set_dma) {
 		if (get_dma) {
 			printf(" setting using_dma to %d", dma);
 			on_off(dma);
 		}
-		if (ioctl(fd, HDIO_SET_DMA, dma))
+		if (ioctl(fd, HDIO_SET_DMA, dma)) {
+			err = errno;
 			perror(" HDIO_SET_DMA failed");
+		}
 	}
 	if (set_dma_q) {
 		if (get_dma_q) {
 			printf(" setting DMA queue_depth to %d", dma_q);
 			on_off(dma_q);
 		}
-		if (ioctl(fd, HDIO_SET_QDMA, dma_q))
+		if (ioctl(fd, HDIO_SET_QDMA, dma_q)) {
+			err = errno;
 			perror(" HDIO_SET_QDMA failed");
+		}
 	}
 	if (set_nowerr) {
 		if (get_nowerr) {
 			printf(" setting nowerr to %d", nowerr);
 			on_off(nowerr);
 		}
-		if (ioctl(fd, HDIO_SET_NOWERR, nowerr))
+		if (ioctl(fd, HDIO_SET_NOWERR, nowerr)) {
+			err = errno;
 			perror(" HDIO_SET_NOWERR failed");
+		}
 	}
 	if (set_keep) {
 		if (get_keep) {
 			printf(" setting keep_settings to %d", keep);
 			on_off(keep);
 		}
-		if (ioctl(fd, HDIO_SET_KEEPSETTINGS, keep))
+		if (ioctl(fd, HDIO_SET_KEEPSETTINGS, keep)) {
+			err = errno;
 			perror(" HDIO_SET_KEEPSETTINGS failed");
+		}
 	}
 	if (set_doorlock) {
 		__u8 args[4] = {0,0,0,0};
@@ -918,8 +950,10 @@
 			printf(" setting drive doorlock to %d", doorlock);
 			on_off(doorlock);
 		}
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(doorlock) failed");
+		}
 	}
 	if (set_dkeep) {
 		/* lock/unlock the drive's "feature" settings */
@@ -929,24 +963,30 @@
 			on_off(dkeep);
 		}
 		args[2] = dkeep ? 0x66 : 0xcc;
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(keepsettings) failed");
+		}
 	}
 	if (set_defects) {
 		__u8 args[4] = {ATA_OP_SETFEATURES,0,0x04,0};
 		args[2] = defects ? 0x04 : 0x84;
 		if (get_defects)
 			printf(" setting drive defect management to %d\n", defects);
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(defectmgmt) failed");
+		}
 	}
 	if (set_prefetch) {
 		__u8 args[4] = {ATA_OP_SETFEATURES,0,0xab,0};
 		args[1] = prefetch;
 		if (get_prefetch)
 			printf(" setting drive prefetch to %d\n", prefetch);
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(setprefetch) failed");
+		}
 	}
 	if (set_xfermode) {
 		__u8 args[4] = {ATA_OP_SETFEATURES,0,3,0};
@@ -955,8 +995,10 @@
 			printf(" setting xfermode to %d", xfermode_requested);
 			interpret_xfermode(xfermode_requested);
 		}
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(setxfermode) failed");
+		}
 	}
 	if (set_lookahead) {
 		__u8 args[4] = {ATA_OP_SETFEATURES,0,0,0};
@@ -965,8 +1007,10 @@
 			printf(" setting drive read-lookahead to %d", lookahead);
 			on_off(lookahead);
 		}
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(setreadahead) failed");
+		}
 	}
 	if (set_powerup_in_standby) {
 		__u8 args[4] = {ATA_OP_SETFEATURES,0,0,0};
@@ -1004,14 +1048,18 @@
 			if (get_apmmode)
 				printf(" 0x%02x (%d)\n",apmmode,apmmode);
 		}
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD failed");
+		}
 	}
 	if (set_cdromspeed) {
 		if (get_cdromspeed)
 			printf ("setting cdrom speed to %d\n", cdromspeed);
-		if (ioctl (fd, CDROM_SELECT_SPEED, cdromspeed))
+		if (ioctl (fd, CDROM_SELECT_SPEED, cdromspeed)) {
+			err = errno;
 			perror(" CDROM_SELECT_SPEED failed");
+		}
 	}
 	if (set_acoustic) {
 		__u8 args[4];
@@ -1021,8 +1069,10 @@
 		args[1] = acoustic;
 		args[2] = acoustic ? 0x42 : 0xc2;
 		args[3] = 0;
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD:ACOUSTIC failed");
+		}
 	}
 	if (set_wcache) {
 		if (get_wcache) {
@@ -1030,15 +1080,17 @@
 			on_off(wcache);
 		}
 		if (!wcache)
-			flush_wcache(fd, &id);
+			err = flush_wcache(fd, &id);
 		if (ioctl(fd, HDIO_SET_WCACHE, wcache)) {
 			__u8 setcache[4] = {ATA_OP_SETFEATURES,0,0,0};
 			setcache[2] = wcache ? 0x02 : 0x82;
-			if (do_drive_cmd(fd, setcache))
+			if (do_drive_cmd(fd, setcache)) {
+				err = errno;
 				perror(" HDIO_DRIVE_CMD(setcache) failed");
+			}
 		}
 		if (!wcache)
-			flush_wcache(fd, &id);
+			err = flush_wcache(fd, &id);
 	}
 	if (set_standbynow) {
 		__u8 args1[4] = {ATA_OP_STANDBYNOW1,0,0,0};
@@ -1046,8 +1098,10 @@
 		if (get_standbynow)
 			printf(" issuing standby command\n");
 		if (do_drive_cmd(fd, args1)
-		 && do_drive_cmd(fd, args2))
+		 && do_drive_cmd(fd, args2)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(standby) failed");
+		}
 	}
 	if (set_sleepnow) {
 		__u8 args1[4] = {ATA_OP_SLEEPNOW1,0,0,0};
@@ -1055,8 +1109,10 @@
 		if (get_sleepnow)
 			printf(" issuing sleep command\n");
 		if (do_drive_cmd(fd, args1)
-		 && do_drive_cmd(fd, args2))
+		 && do_drive_cmd(fd, args2)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(sleep) failed");
+		}
 	}
 	if (set_security) {
 		do_set_security(fd);
@@ -1064,15 +1120,19 @@
 	if (set_freeze) {
 		__u8 args[4] = {ATA_OP_SECURITY_FREEZE_LOCK,0,0,0};
 		printf(" issuing Security Freeze command\n");
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(freeze) failed");
+		}
 	}
 	if (set_seagate) {
 		__u8 args[4] = {0xfb,0,0,0};
 		if (get_seagate)
 			printf(" disabling Seagate auto powersaving mode\n");
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(seagatepwrsave) failed");
+		}
 	}
 	if (set_standby) {
 		__u8 args[4] = {ATA_OP_SETIDLE1,standby,0,0};
@@ -1080,14 +1140,18 @@
 			printf(" setting standby to %u", standby);
 			interpret_standby();
 		}
-		if (do_drive_cmd(fd, args))
+		if (do_drive_cmd(fd, args)) {
+			err = errno;
 			perror(" HDIO_DRIVE_CMD(setidle1) failed");
+		}
 	}
 	if (set_busstate) {
 		if (get_busstate)
 			printf(" setting bus state to %d (%s)\n", busstate, busstate_str(busstate));
-		if (ioctl(fd, HDIO_SET_BUSSTATE, busstate))
+		if (ioctl(fd, HDIO_SET_BUSSTATE, busstate)) {
+			err = errno;
 			perror(" HDIO_SET_BUSSTATE failed");
+		}
 	}
 	if (do_drq_hsm_error) {
 		id = get_identify_data(fd, id);
@@ -1143,12 +1207,18 @@
 					break;
 				default:printf("\?\?\?)\n");
 			}
+		} else {
+			err = errno;
+			perror(" HDIO_GET_32BIT failed");
 		}
 	}
 	if (do_defaults || get_unmask) {
 		if (0 == ioctl(fd, HDIO_GET_UNMASKINTR, &parm)) {
 			printf(" unmaskirq     = %2ld", parm);
 			on_off(parm);
+		} else {
+			err = errno;
+			perror(" HDIO_GET_UNMASKINTR failed");
 		}
 	}
 
@@ -1159,6 +1229,9 @@
 				printf(" (DMA-Assisted-PIO)\n");
 			else
 				on_off(parm);
+		} else {
+			err = errno;
+			perror(" HDIO_GET_DMA failed");
 		}
 	}
 	if (get_dma_q) {
@@ -1173,28 +1246,34 @@
 		if (0 == ioctl(fd, HDIO_GET_KEEPSETTINGS, &parm)) {
 			printf(" keepsettings  = %2ld", parm);
 			on_off(parm);
+		} else {
+			err = errno;
+			perror(" HDIO_GET_KEEPSETTINGS failed");
 		}
 	}
 	if (get_nowerr) {
-		if (ioctl(fd, HDIO_GET_NOWERR, &parm))
+		if (ioctl(fd, HDIO_GET_NOWERR, &parm)) {
+			err = errno;
 			perror(" HDIO_GET_NOWERR failed");
-		else {
+		} else {
 			printf(" nowerr        = %2ld", parm);
 			on_off(parm);
 		}
 	}
 	if (do_defaults || get_readonly) {
-		if (ioctl(fd, BLKROGET, &parm))
+		if (ioctl(fd, BLKROGET, &parm)) {
+			err = errno;
 			perror(" BLKROGET failed");
-		else {
+		} else {
 			printf(" readonly      = %2ld", parm);
 			on_off(parm);
 		}
 	}
 	if (do_defaults || get_fsreadahead) {
-		if (ioctl(fd, BLKRAGET, &parm))
+		if (ioctl(fd, BLKRAGET, &parm)) {
+			err = errno;
 			perror(" BLKRAGET failed");
-		else {
+		} else {
 			printf(" readahead     = %2ld", parm);
 			on_off(parm);
 		}
@@ -1209,12 +1288,13 @@
 		static struct hd_geometry g;
 		static struct local_hd_big_geometry bg;
 
-		if (0 == do_blkgetsize(fd, &blksize)) {
+		if (0 == (err = do_blkgetsize(fd, &blksize))) {
 			if (!ioctl(fd, HDIO_GETGEO_BIG, &bg))
 				printf(msg, bg.cylinders, bg.heads, bg.sectors, blksize, bg.start);
-			else if (ioctl(fd, HDIO_GETGEO, &g))
+			else if (ioctl(fd, HDIO_GETGEO, &g)) {
+				err = errno;
 				perror(" HDIO_GETGEO failed");
-			else
+			} else
 				printf(msg, g.cylinders, g.heads, g.sectors, blksize, g.start);
 		}
 	}
@@ -1223,9 +1303,10 @@
 		const char *state;
 		if (do_drive_cmd(fd, args)
 		 && (args[0] = ATA_OP_CHECKPOWERMODE2) /* (single =) try again with 0x98 */
-		 && do_drive_cmd(fd, args))
+		 && do_drive_cmd(fd, args)) {
+			err = errno;
 			state = "unknown";
-		else
+		} else
 			state = (args[2] == 255) ? "active/idle" : "standby";
 		printf(" drive state is:  %s\n", state);
 	}
@@ -1240,8 +1321,10 @@
 			dump_identity(id2);
 		} else if (errno == -ENOMSG)
 			printf(" no identification info available\n");
-		else
+		else {
+			err = errno;
 			perror(" HDIO_GET_IDENTITY failed");
+		}
 	}
 	if (do_IDentity) {
 		id = get_identify_data(fd, id);
@@ -1294,41 +1377,48 @@
 		}
 	}
 	if (get_busstate) {
-		if (ioctl(fd, HDIO_GET_BUSSTATE, &parm))
+		if (ioctl(fd, HDIO_GET_BUSSTATE, &parm)) {
+			err = errno;
 			perror(" HDIO_GET_BUSSTATE failed");
-		else
+		} else
 			printf(" busstate      = %2ld (%s)\n", parm, busstate_str(parm));
 	}
 
 	if (do_ctimings)
 		time_cache(fd);
 	if (do_flush_wcache)
-		flush_wcache(fd, &id);
+		err = flush_wcache(fd, &id);
 	if (do_timings)
-		time_device(fd);
+		err = time_device(fd);
 	if (do_flush)
 		flush_buffer_cache(fd);
 	if (set_reread_partn) {
 		if (get_reread_partn)
 			printf(" re-reading partition table\n");
 		if (ioctl(fd, BLKRRPART, NULL)) {
+			err = errno;
 			perror(" BLKRRPART failed");
 		}
 	}
 	if (set_doreset) {
 		if (get_doreset)
 			printf(" resetting drive\n");
-		if (ioctl(fd, HDIO_DRIVE_RESET, NULL))
+		if (ioctl(fd, HDIO_DRIVE_RESET, NULL)) {
+			err = errno;
 			perror(" HDIO_DRIVE_RESET failed");
+		}
 	}
 	if (set_tristate) {
 		__u8 args[4] = {0,tristate,0,0};
 		if (get_tristate)
 			printf(" setting tri-state to %d\n", tristate);
-		if (ioctl(fd, HDIO_TRISTATE_HWIF, &args))
+		if (ioctl(fd, HDIO_TRISTATE_HWIF, &args)) {
+			err = errno;
 			perror(" HDIO_TRISTATE_HWIF failed");
+		}
 	}
 	close (fd);
+	exit (err);
 }
 
 static void usage_help (int rc)
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