wok-current rev 5163
linux: limit uncompress initramfs dots.
author | Pascal Bellard <pascal.bellard@slitaz.org> |
---|---|
date | Thu Mar 25 17:01:27 2010 +0100 (2010-03-25) |
parents | 252a378d28c1 |
children | 6d0d35352519 |
files | linux/stuff/linux-freeinitrd-2.6.30.6.u |
line diff
1.1 --- a/linux/stuff/linux-freeinitrd-2.6.30.6.u Thu Mar 25 09:27:06 2010 +0100 1.2 +++ b/linux/stuff/linux-freeinitrd-2.6.30.6.u Thu Mar 25 17:01:27 2010 +0100 1.3 @@ -33,13 +33,13 @@ 1.4 + char *max; 1.5 +} fill; 1.6 + 1.7 -+static void release_inbuf(void) 1.8 ++static void release_inbuf(unsigned n) 1.9 +{ 1.10 -+ if (fill.offset >= INITRD_PAGE) { 1.11 -+ unsigned rem = fill.offset % INITRD_PAGE; 1.12 -+ unsigned end = initrd_start + fill.offset - rem; 1.13 ++ if (n >= INITRD_PAGE) { 1.14 ++ unsigned rem = n % INITRD_PAGE; 1.15 ++ unsigned end = initrd_start + n - rem; 1.16 + _free_initrd(initrd_start, end, free_rootfs_mem); 1.17 -+ fill.freed += fill.offset - rem; 1.18 ++ fill.freed += n - rem; 1.19 + if (fill.freed >= INITRD_DOT) { 1.20 + fill.freed -= INITRD_DOT; 1.21 + printk("."); 1.22 @@ -55,7 +55,7 @@ 1.23 + if (max > size) max = size; 1.24 + if (max > INITRD_PAGE) max = INITRD_PAGE; 1.25 + memcpy(buffer, (void *)(initrd_start + fill.offset), max); 1.26 -+ release_inbuf(); 1.27 ++ release_inbuf(fill.offset); 1.28 + fill.offset += max; 1.29 + fill.inptr += fill.last; 1.30 + fill.last = max; 1.31 @@ -65,7 +65,7 @@ 1.32 static int __init write_buffer(char *buf, unsigned len) 1.33 { 1.34 count = len; 1.35 -@@ -418,6 +464,7 @@ 1.36 +@@ -418,6 +463,7 @@ 1.37 decompress_fn decompress; 1.38 const char *compress_name; 1.39 static __initdata char msg_buf[64]; 1.40 @@ -73,7 +73,7 @@ 1.41 1.42 header_buf = kmalloc(110, GFP_KERNEL); 1.43 symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL); 1.44 -@@ -431,8 +478,31 @@ 1.45 +@@ -431,11 +478,16 @@ 1.46 message = NULL; 1.47 while (!message && len) { 1.48 loff_t saved_offset = this_header; 1.49 @@ -82,30 +82,15 @@ 1.50 + fill.inptr = fill.last = fill.freed = 0; 1.51 if (*buf == '0' && !(this_header & 3)) { 1.52 state = Start; 1.53 -+ if (early_free_initrd) { 1.54 -+ while (len) { 1.55 -+ unsigned n = len, tofree; 1.56 -+ if (n > INITRD_PAGE) 1.57 -+ n = INITRD_PAGE; 1.58 -+ flush_buffer(buf, n); 1.59 -+ buf += n; 1.60 -+ len -= n; 1.61 -+ n = buf - (char *) initrd_start; 1.62 -+ tofree = n - (n % INITRD_PAGE); 1.63 -+ if (!tofree) 1.64 -+ continue; 1.65 -+ _free_initrd(initrd_start, 1.66 -+ initrd_start + tofree, 1.67 -+ free_rootfs_mem); 1.68 -+ initrd_start += tofree; 1.69 -+ printk("."); 1.70 -+ } 1.71 -+ continue; 1.72 -+ } 1.73 written = write_buffer(buf, len); 1.74 buf += written; 1.75 len -= written; 1.76 -@@ -446,9 +516,15 @@ 1.77 ++ if (early_free_initrd) 1.78 ++ release_inbuf(buf - (char *) initrd_start); 1.79 + continue; 1.80 + } 1.81 + if (!*buf) { 1.82 +@@ -446,9 +497,15 @@ 1.83 } 1.84 this_header = 0; 1.85 decompress = decompress_method(buf, len, &compress_name); 1.86 @@ -123,7 +108,7 @@ 1.87 else if (compress_name) { 1.88 if (!message) { 1.89 snprintf(msg_buf, sizeof msg_buf, 1.90 -@@ -485,7 +561,8 @@ 1.91 +@@ -485,7 +543,8 @@ 1.92 #include <linux/initrd.h> 1.93 #include <linux/kexec.h> 1.94 1.95 @@ -133,7 +118,7 @@ 1.96 { 1.97 #ifdef CONFIG_KEXEC 1.98 unsigned long crashk_start = (unsigned long)__va(crashk_res.start); 1.99 -@@ -513,6 +590,12 @@ 1.100 +@@ -513,6 +571,12 @@ 1.101 #endif 1.102 free_initrd_mem(initrd_start, initrd_end); 1.103 skip: