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Rename mkdumpheader() and group EKCD functions in kern_shutdown.c.

Browse Source 
This helps simplify the code in kern_shutdown.c and reduces the number
of globally visible functions.

No functional change intended.

Reviewed by:	cem, def
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D11603
This commit is contained in:
Mark Johnston 2017-08-18 04:04:09 +00:00
parent 50ef60dabe
commit 01938d3666
11 changed files with 61 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/amd64/amd64/minidump_machdep.c
View File

@ -327,8 +327,8 @@ minidumpsys(struct dumperinfo *di)
mdhdr.dmapbase = DMAP_MIN_ADDRESS;
mdhdr.dmapend = DMAP_MAX_ADDRESS;
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_AMD64_VERSION, dumpsize,
kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_AMD64_VERSION,
dumpsize);
printf("Dumping %llu out of %ju MB:", (long long)dumpsize >> 20,
ptoa((uintmax_t)physmem) / 1048576);

4
sys/arm/arm/minidump_machdep.c
View File

@ -245,8 +245,8 @@ minidumpsys(struct dumperinfo *di)
#else
mdhdr.mmuformat = MINIDUMP_MMU_FORMAT_V4;
#endif
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_ARM_VERSION, dumpsize,
kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_ARM_VERSION,
dumpsize);
printf("Physical memory: %u MB\n", ptoa((uintmax_t)physmem) / 1048576);
printf("Dumping %llu MB:", (long long)dumpsize >> 20);

4
sys/arm64/arm64/minidump_machdep.c
View File

@ -289,8 +289,8 @@ minidumpsys(struct dumperinfo *di)
mdhdr.dmapbase = DMAP_MIN_ADDRESS;
mdhdr.dmapend = DMAP_MAX_ADDRESS;
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_AARCH64_VERSION,
dumpsize, kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_AARCH64_VERSION,
dumpsize);
printf("Dumping %llu out of %ju MB:", (long long)dumpsize >> 20,
ptoa((uintmax_t)physmem) / 1048576);

7
sys/ddb/db_textdump.c
View File

@ -463,8 +463,7 @@ textdump_dumpsys(struct dumperinfo *di)
*/
textdump_offset = di->mediasize - sizeof(kdh);
textdump_saveoff(&trailer_offset);
mkdumpheader(&kdh, TEXTDUMPMAGIC, KERNELDUMP_TEXT_VERSION, 0, 0,
TEXTDUMP_BLOCKSIZE);
dump_init_header(di, &kdh, TEXTDUMPMAGIC, KERNELDUMP_TEXT_VERSION, 0);
(void)textdump_writenextblock(di, (char *)&kdh);
/*
@ -489,8 +488,8 @@ textdump_dumpsys(struct dumperinfo *di)
* size.
*/
dumplen = trailer_offset - (textdump_offset + TEXTDUMP_BLOCKSIZE);
mkdumpheader(&kdh, TEXTDUMPMAGIC, KERNELDUMP_TEXT_VERSION, dumplen, 0,
TEXTDUMP_BLOCKSIZE);
dump_init_header(di, &kdh, TEXTDUMPMAGIC, KERNELDUMP_TEXT_VERSION,
dumplen);
(void)textdump_writenextblock(di, (char *)&kdh);
textdump_restoreoff(trailer_offset);
(void)textdump_writenextblock(di, (char *)&kdh);

4
sys/i386/i386/minidump_machdep.c
View File

@ -252,8 +252,8 @@ minidumpsys(struct dumperinfo *di)
mdhdr.paemode = 1;
#endif
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_I386_VERSION, dumpsize,
kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_I386_VERSION,
dumpsize);
printf("Physical memory: %ju MB\n", ptoa((uintmax_t)physmem) / 1048576);
printf("Dumping %llu MB:", (long long)dumpsize >> 20);

4
sys/kern/kern_dump.c
View File

@ -341,8 +341,8 @@ dumpsys_generic(struct dumperinfo *di)
dumpsize += fileofs;
hdrgap = fileofs - roundup2((off_t)hdrsz, di->blocksize);
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_ARCH_VERSION, dumpsize,
kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_ARCH_VERSION,
dumpsize);
printf("Dumping %ju MB (%d chunks)\n", (uintmax_t)dumpsize >> 20,
ehdr.e_phnum - DUMPSYS_NUM_AUX_HDRS);

85
sys/kern/kern_shutdown.c
View File

@ -895,14 +895,10 @@ failed:
free(kdc, M_EKCD);
return (NULL);
}
#endif /* EKCD */
static int
kerneldumpcrypto_init(struct kerneldumpcrypto *kdc)
{
#ifndef EKCD
return (0);
#else
uint8_t hash[SHA256_DIGEST_LENGTH];
SHA256_CTX ctx;
struct kerneldumpkey *kdk;
@ -942,21 +938,17 @@ kerneldumpcrypto_init(struct kerneldumpcrypto *kdc)
out:
explicit_bzero(hash, sizeof(hash));
return (error);
#endif
}
uint32_t
static uint32_t
kerneldumpcrypto_dumpkeysize(const struct kerneldumpcrypto *kdc)
{
#ifdef EKCD
if (kdc == NULL)
return (0);
return (kdc->kdc_dumpkeysize);
#else
return (0);
#endif
}
#endif /* EKCD */
/* Registration of dumpers */
int
@ -1036,6 +1028,20 @@ dump_check_bounds(struct dumperinfo *di, off_t offset, size_t length)
return (0);
}
/* Call dumper with bounds checking. */
static int
dump_raw_write(struct dumperinfo *di, void *virtual, vm_offset_t physical,
off_t offset, size_t length)
{
int error;
error = dump_check_bounds(di, offset, length);
if (error != 0)
return (error);
return (di->dumper(di->priv, virtual, physical, offset, length));
}
#ifdef EKCD
static int
dump_encrypt(struct kerneldumpcrypto *kdc, uint8_t *buf, size_t size)
@ -1115,21 +1121,20 @@ dump_encrypted_write(struct dumperinfo *di, void *virtual, vm_offset_t physical,
return (0);
}
#endif /* EKCD */
/* Call dumper with bounds checking. */
static int
dump_raw_write(struct dumperinfo *di, void *virtual, vm_offset_t physical,
off_t offset, size_t length)
dump_write_key(struct dumperinfo *di, vm_offset_t physical, off_t offset)
{
int error;
struct kerneldumpcrypto *kdc;
error = dump_check_bounds(di, offset, length);
if (error != 0)
return (error);
kdc = di->kdc;
if (kdc == NULL)
return (0);
return (di->dumper(di->priv, virtual, physical, offset, length));
return (dump_raw_write(di, kdc->kdc_dumpkey, physical, offset,
kdc->kdc_dumpkeysize));
}
#endif /* EKCD */
int
dump_write(struct dumperinfo *di, void *virtual, vm_offset_t physical,
@ -1194,23 +1199,6 @@ dump_write_header(struct dumperinfo *di, struct kerneldumpheader *kdh,
return (ret);
}
static int
dump_write_key(struct dumperinfo *di, vm_offset_t physical, off_t offset)
{
#ifndef EKCD
return (0);
#else /* EKCD */
struct kerneldumpcrypto *kdc;
kdc = di->kdc;
if (kdc == NULL)
return (0);
return (dump_raw_write(di, kdc->kdc_dumpkey, physical, offset,
kdc->kdc_dumpkeysize));
#endif /* !EKCD */
}
/*
* Don't touch the first SIZEOF_METADATA bytes on the dump device. This is to
* protect us from metadata and metadata from us.
@ -1226,14 +1214,19 @@ int
dump_start(struct dumperinfo *di, struct kerneldumpheader *kdh, off_t *dumplop)
{
uint64_t dumpsize;
uint32_t keysize;
int error;
#ifdef EKCD
error = kerneldumpcrypto_init(di->kdc);
if (error != 0)
return (error);
keysize = kerneldumpcrypto_dumpkeysize(di->kdc);
#else
keysize = 0;
#endif
dumpsize = dtoh64(kdh->dumplength) + 2 * di->blocksize +
kerneldumpcrypto_dumpkeysize(di->kdc);
dumpsize = dtoh64(kdh->dumplength) + 2 * di->blocksize + keysize;
if (di->mediasize < SIZEOF_METADATA + dumpsize)
return (E2BIG);
@ -1244,10 +1237,12 @@ dump_start(struct dumperinfo *di, struct kerneldumpheader *kdh, off_t *dumplop)
return (error);
*dumplop += di->blocksize;
#ifdef EKCD
error = dump_write_key(di, 0, *dumplop);
if (error != 0)
return (error);
*dumplop += kerneldumpcrypto_dumpkeysize(di->kdc);
*dumplop += keysize;
#endif
return (0);
}
@ -1270,8 +1265,8 @@ dump_finish(struct dumperinfo *di, struct kerneldumpheader *kdh, off_t dumplo)
}
void
mkdumpheader(struct kerneldumpheader *kdh, char *magic, uint32_t archver,
uint64_t dumplen, uint32_t dumpkeysize, uint32_t blksz)
dump_init_header(const struct dumperinfo *di, struct kerneldumpheader *kdh,
char *magic, uint32_t archver, uint64_t dumplen)
{
size_t dstsize;
@ -1282,8 +1277,12 @@ mkdumpheader(struct kerneldumpheader *kdh, char *magic, uint32_t archver,
kdh->architectureversion = htod32(archver);
kdh->dumplength = htod64(dumplen);
kdh->dumptime = htod64(time_second);
kdh->dumpkeysize = htod32(dumpkeysize);
kdh->blocksize = htod32(blksz);
#ifdef EKCD
kdh->dumpkeysize = htod32(kerneldumpcrypto_dumpkeysize(di->kdc));
#else
kdh->dumpkeysize = 0;
#endif
kdh->blocksize = htod32(di->blocksize);
strlcpy(kdh->hostname, prison0.pr_hostname, sizeof(kdh->hostname));
dstsize = sizeof(kdh->versionstring);
if (strlcpy(kdh->versionstring, version, dstsize) >= dstsize)

4
sys/mips/mips/minidump_machdep.c
View File

@ -261,8 +261,8 @@ minidumpsys(struct dumperinfo *di)
mdhdr.ptesize = ptesize;
mdhdr.kernbase = VM_MIN_KERNEL_ADDRESS;
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_MIPS_VERSION, dumpsize,
kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_MIPS_VERSION,
dumpsize);
printf("Dumping %llu out of %ju MB:", (long long)dumpsize >> 20,
ptoa((uintmax_t)physmem) / 1048576);

4
sys/sparc64/sparc64/dump_machdep.c
View File

@ -94,8 +94,8 @@ dumpsys(struct dumperinfo *di)
DEV_BSIZE);
size += hdrsize;
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_SPARC64_VERSION, size,
kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_SPARC64_VERSION,
size);
printf("Dumping %lu MB (%d chunks)\n", (u_long)(size >> 20), nreg);

2
sys/sys/conf.h
View File

@ -342,6 +342,8 @@ struct dumperinfo {
int set_dumper(struct dumperinfo *di, const char *devname, struct thread *td,
uint8_t encrypt, const uint8_t *key, uint32_t encryptedkeysize,
const uint8_t *encryptedkey);
void dump_init_header(const struct dumperinfo *di, struct kerneldumpheader *kdh,
char *magic, uint32_t archver, uint64_t dumplen);
int dump_start(struct dumperinfo *di, struct kerneldumpheader *kdh,
off_t *dumplop);
int dump_finish(struct dumperinfo *di, struct kerneldumpheader *kdh,

5
sys/sys/kerneldump.h
View File

@ -125,11 +125,6 @@ struct dump_pa {
vm_paddr_t pa_size;
};
uint32_t kerneldumpcrypto_dumpkeysize(const struct kerneldumpcrypto *kdc);
void mkdumpheader(struct kerneldumpheader *kdh, char *magic, uint32_t archver,
uint64_t dumplen, uint32_t dumpkeysize, uint32_t blksz);
int dumpsys_generic(struct dumperinfo *);
void dumpsys_map_chunk(vm_paddr_t, size_t, void **);