From: David van Moolenbroek <david@minix3.org>
Date: Sun, 14 Oct 2012 23:00:51 +0000 (+0200)
Subject: part(8)/autopart(8): remove partition hack
X-Git-Tag: v3.2.1~277
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/Bv9ARM.ch09.html?a=commitdiff_plain;h=3399c2c966a57b6e50225330417f7577fd5d04ba;p=minix.git

part(8)/autopart(8): remove partition hack

We have actually had lseek64 for quite a while now, so it's no longer
necessary to do horrible things to the partition table just to be able
to access large offsets into a device.

Also fix the compiler warnings in these commands.
---

diff --git a/commands/autopart/autopart.c b/commands/autopart/autopart.c
index 8e08fda08..e07022c51 100644
--- a/commands/autopart/autopart.c
+++ b/commands/autopart/autopart.c
@@ -150,9 +150,9 @@ void tty_raw(void)
 char t_cd[16], t_cm[32], t_so[16], t_se[16], t_md[16], t_me[16];
 #define STATUSROW	10
 
-void putchr(int c)
+int putchr(int c)
 {
-	putchar(c);
+	return putchar(c);
 }
 
 void putstr(char *s)
@@ -359,7 +359,7 @@ struct part_entry table[1 + NR_PARTITIONS];
 int existing[1 + NR_PARTITIONS];
 unsigned long offset= 0, extbase= 0, extsize;
 int submerged= 0;
-char sort_index[1 + NR_PARTITIONS], sort_order[1 + NR_PARTITIONS];
+int sort_index[1 + NR_PARTITIONS], sort_order[1 + NR_PARTITIONS];
 unsigned cylinders= 1, heads= 1, sectors= 1, secpcyl= 1;
 unsigned alt_cyls= 1, alt_heads= 1, alt_secs= 1;
 int precise= 0;
@@ -1401,44 +1401,16 @@ void installboot(unsigned char *bootblock, char *masterboot)
 ssize_t boot_readwrite(int rw)
 /* Read (0) or write (1) the boot sector. */
 {
-	u64_t off64 = mul64u(offset, SECTOR_SIZE);
 	int r = 0;
 
-#if __minix_vmd
-	/* Minix-vmd has a 64 bit seek. */
-	if (fcntl(device, F_SEEK, off64) < 0) return -1;
-#else
-	/* Minix has to gross things with the partition base. */
-	struct partition geom0, geom_seek;
-
-	if (offset >= (LONG_MAX / SECTOR_SIZE - 1)) {
-		/* Move partition base. */
-		if (ioctl(device, DIOCGETP, &geom0) < 0) return -1;
-		geom_seek.base = add64(geom0.base, off64);
-		geom_seek.size = cvu64(cmp64(add64u(off64, SECTOR_SIZE),
-			geom0.size) <= 0 ? _STATIC_BLOCK_SIZE : 0);
-		sync();
-		if (ioctl(device, DIOCSETP, &geom_seek) < 0) return -1;
-		if (lseek(device, (off_t) 0, SEEK_SET) == -1) return -1;
-	} else {
-		/* Can reach this point normally. */
-		if (lseek(device, (off_t) offset * SECTOR_SIZE, SEEK_SET) == -1)
-			return -1;
-	}
-#endif
+	if (lseek64(device, (u64_t) offset * SECTOR_SIZE, SEEK_SET, NULL) < 0)
+		return -1;
 
 	switch (rw) {
 	case 0:	r= read(device, bootblock, SECTOR_SIZE);	break;
 	case 1:	r= write(device, bootblock, SECTOR_SIZE);	break;
 	}
 
-#if !__minix_vmd
-	if (offset >= (LONG_MAX / SECTOR_SIZE - 1)) {
-		/* Restore partition base and size. */
-		sync();
-		if (ioctl(device, DIOCSETP, &geom0) < 0) return -1;
-	}
-#endif
 	return r;
 }
 
diff --git a/commands/part/part.c b/commands/part/part.c
index c31f3d583..18b3ee53a 100644
--- a/commands/part/part.c
+++ b/commands/part/part.c
@@ -121,9 +121,9 @@ void init_tty(void)
 	tty_raw();
 }
 
-void putchr(int c)
+int putchr(int c)
 {
-	putchar(c);
+	return putchar(c);
 }
 
 void putstr(char *s)
@@ -852,7 +852,8 @@ void print(object_t *op)
 	case O_LSEC:
 				/* Partition's last sector. */
 		t= entry2last(pe);
-		sprintf(op->value, t == -1 ? "-1" : "%lu", t % sectors);
+		if (t == -1) strcpy(op->value, "-1");
+		else sprintf(op->value, "%lu", t % sectors);
 		if (!aligned(t + 1, sectors)) op->flags|= OF_ODD;
 		break;
 	case O_BASE:
@@ -896,7 +897,7 @@ void print(object_t *op)
 	} else {
 		memset(op->value + n, ' ', op->len - n);
 	}
-	op->value[op->len]= 0;
+	op->value[(int) op->len]= 0;
 
 	if ((op->flags & (OF_ODD | OF_BAD)) == (oldflags & (OF_ODD | OF_BAD))
 				&& strcmp(op->value, oldvalue) == 0) {
@@ -1581,44 +1582,16 @@ void installboot(unsigned char *bootblock, char *masterboot)
 ssize_t boot_readwrite(int rw)
 /* Read (0) or write (1) the boot sector. */
 {
-	u64_t off64 = mul64u(offset, SECTOR_SIZE);
-	int r;
-
-#if __minix_vmd
-	/* Minix-vmd has a 64 bit seek. */
-	if (fcntl(device, F_SEEK, off64) < 0) return -1;
-#else
-	/* Minix has to gross things with the partition base. */
-	struct partition geom0, geom_seek;
-
-	if (offset >= (LONG_MAX / SECTOR_SIZE - 1)) {
-		/* Move partition base. */
-		if (ioctl(device, DIOCGETP, &geom0) < 0) return -1;
-		geom_seek.base = add64(geom0.base, off64);
-		geom_seek.size = cvu64(cmp64(add64u(off64, SECTOR_SIZE),
-			geom0.size) <= 0 ? _STATIC_BLOCK_SIZE : 0);
-		sync();
-		if (ioctl(device, DIOCSETP, &geom_seek) < 0) return -1;
-		if (lseek(device, (off_t) 0, SEEK_SET) == -1) return -1;
-	} else {
-		/* Can reach this point normally. */
-		if (lseek(device, (off_t) offset * SECTOR_SIZE, SEEK_SET) == -1)
-			return -1;
-	}
-#endif
+	int r = 0;
+
+	if (lseek64(device, (u64_t) offset * SECTOR_SIZE, SEEK_SET, NULL) < 0)
+		return -1;
 
 	switch (rw) {
 	case 0:	r= read(device, bootblock, SECTOR_SIZE);	break;
 	case 1:	r= write(device, bootblock, SECTOR_SIZE);	break;
 	}
 
-#if !__minix_vmd
-	if (offset >= (LONG_MAX / SECTOR_SIZE - 1)) {
-		/* Restore partition base and size. */
-		sync();
-		if (ioctl(device, DIOCSETP, &geom0) < 0) return -1;
-	}
-#endif
 	return r;
 }