utils-extra

commit: ab267e25eac344209100c7057670afed57b07bd9
parent d749352609d337968c846bd9056462bebf7331a0
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Thu,  1 Jan 2026 07:33:09 +0100

cmd/disk_id: format

Diffstat:
M
cmd/disk_id.c
48
+++++++++++++++++++++++++++++-------------------

1 file changed, 29 insertions(+), 19 deletions(-)
diff --git a/cmd/disk_id.c b/cmd/disk_id.c
@@ -3,15 +3,15 @@
 // SPDX-License-Identifier: MPL-2.0
 
 #define _DEFAULT_SOURCE
-#include <string.h> // strerror
-#include <stdio.h>
+#include <ctype.h> // isalnum
 #include <errno.h>
-#include <stropts.h> // ioctl
-#include <fcntl.h> // open
+#include <fcntl.h>       // open
 #include <linux/hdreg.h> // HDIO_GET_IDENTITY
-#include <unistd.h> // fsync, write
-#include <stdint.h> // uint16_t
-#include <ctype.h> // isalnum
+#include <stdint.h>      // uint16_t
+#include <stdio.h>
+#include <string.h>  // strerror
+#include <stropts.h> // ioctl
+#include <unistd.h>  // fsync, write
 
 static char *
 strip(char *s, size_t *len)
@@ -22,9 +22,9 @@ strip(char *s, size_t *len)
 		(*len)--;
 	}
 
-	while(*len > 0 && s[(*len)-1] == ' ')
+	while(*len > 0 && s[(*len) - 1] == ' ')
 	{
-		s[(*len)-1] = '\0';
+		s[(*len) - 1] = '\0';
 		(*len)--;
 	}
 
@@ -47,17 +47,18 @@ strncpyalnum(char *dest, char *src, size_t len)
 }
 
 int
-main(int argc, char *argv[]) {
+main(int argc, char *argv[])
+{
 	if(argc != 2)
 	{
-		fprintf(stderr, "disk_id: error: Need 1 argument, got %d\n", argc-1);
+		fprintf(stderr, "disk_id: error: Need 1 argument, got %d\n", argc - 1);
 		fprintf(stderr, "Usage: disk_id <block_device_path>\n");
 		return 1;
 	}
 
 	const char *dev = argv[1];
 
-	int fd = open(dev, O_RDONLY|O_NONBLOCK|O_LARGEFILE);
+	int fd = open(dev, O_RDONLY | O_NONBLOCK | O_LARGEFILE);
 
 	// IDENTITY is 512 bytes
 	static uint16_t identity[256];
@@ -67,13 +68,22 @@ main(int argc, char *argv[]) {
 		switch(errno)
 		{
 		case EINVAL:
-			fprintf(stderr, "disk_id: error: Device '%s' -> ioctl(HDIO_GET_IDENTITY): [EINVAL] Is a partition not a disk\n", dev);
+			fprintf(stderr,
+			        "disk_id: error: Device '%s' -> ioctl(HDIO_GET_IDENTITY): [EINVAL] Is a partition "
+			        "not a disk\n",
+			        dev);
 			return 1;
 		case ENOMSG:
-			fprintf(stderr, "disk_id: error: Device '%s' -> ioctl(HDIO_GET_IDENTITY): [ENOMSG] Information not available\n", dev);
+			fprintf(stderr,
+			        "disk_id: error: Device '%s' -> ioctl(HDIO_GET_IDENTITY): [ENOMSG] Information not "
+			        "available\n",
+			        dev);
 			return 1;
 		default:
-			fprintf(stderr, "disk_id: error: Device '%s' -> ioctl(HDIO_GET_IDENTITY): %s\n", dev, strerror(errno));
+			fprintf(stderr,
+			        "disk_id: error: Device '%s' -> ioctl(HDIO_GET_IDENTITY): %s\n",
+			        dev,
+			        strerror(errno));
 			return 1;
 		}
 	}
@@ -81,9 +91,9 @@ main(int argc, char *argv[]) {
 	// TODO: Handle errno
 	close(fd);
 
-	static char serno_buf[20] = "";
-	static char model_buf[40] = "";
-	static char disk_id[40+20] = "";
+	static char serno_buf[20]    = "";
+	static char model_buf[40]    = "";
+	static char disk_id[40 + 20] = "";
 
 	size_t serno_len = 20;
 	memcpy(serno_buf, (char *)&identity[10], serno_len);
@@ -100,7 +110,7 @@ main(int argc, char *argv[]) {
 
 	disk_id[modelz++] = '_';
 
-	size_t serialz = strncpyalnum(disk_id+modelz, serno, serno_len);
+	size_t serialz = strncpyalnum(disk_id + modelz, serno, serno_len);
 	if(serialz == 0) return 1;
 
 	printf("%s\n", disk_id);