pstore: Convert internal records to timespec64
This prepares pstore for converting the VFS layer to timespec64. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>hifive-unleashed-5.1
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0220eddac6
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7aaa822ed0
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@ -28,10 +28,9 @@ static int efi_pstore_close(struct pstore_info *psi)
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return 0;
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return 0;
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}
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}
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static inline u64 generic_id(unsigned long timestamp,
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static inline u64 generic_id(u64 timestamp, unsigned int part, int count)
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unsigned int part, int count)
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{
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{
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return ((u64) timestamp * 100 + part) * 1000 + count;
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return (timestamp * 100 + part) * 1000 + count;
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}
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}
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static int efi_pstore_read_func(struct efivar_entry *entry,
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static int efi_pstore_read_func(struct efivar_entry *entry,
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@ -42,7 +41,8 @@ static int efi_pstore_read_func(struct efivar_entry *entry,
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int i;
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int i;
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int cnt;
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int cnt;
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unsigned int part;
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unsigned int part;
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unsigned long time, size;
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unsigned long size;
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u64 time;
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if (efi_guidcmp(entry->var.VendorGuid, vendor))
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if (efi_guidcmp(entry->var.VendorGuid, vendor))
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return 0;
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return 0;
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@ -50,7 +50,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry,
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for (i = 0; i < DUMP_NAME_LEN; i++)
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for (i = 0; i < DUMP_NAME_LEN; i++)
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name[i] = entry->var.VariableName[i];
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name[i] = entry->var.VariableName[i];
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if (sscanf(name, "dump-type%u-%u-%d-%lu-%c",
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if (sscanf(name, "dump-type%u-%u-%d-%llu-%c",
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&record->type, &part, &cnt, &time, &data_type) == 5) {
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&record->type, &part, &cnt, &time, &data_type) == 5) {
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record->id = generic_id(time, part, cnt);
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record->id = generic_id(time, part, cnt);
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record->part = part;
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record->part = part;
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@ -62,7 +62,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry,
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else
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else
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record->compressed = false;
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record->compressed = false;
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record->ecc_notice_size = 0;
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record->ecc_notice_size = 0;
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} else if (sscanf(name, "dump-type%u-%u-%d-%lu",
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} else if (sscanf(name, "dump-type%u-%u-%d-%llu",
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&record->type, &part, &cnt, &time) == 4) {
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&record->type, &part, &cnt, &time) == 4) {
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record->id = generic_id(time, part, cnt);
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record->id = generic_id(time, part, cnt);
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record->part = part;
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record->part = part;
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@ -71,7 +71,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry,
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record->time.tv_nsec = 0;
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record->time.tv_nsec = 0;
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record->compressed = false;
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record->compressed = false;
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record->ecc_notice_size = 0;
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record->ecc_notice_size = 0;
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} else if (sscanf(name, "dump-type%u-%u-%lu",
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} else if (sscanf(name, "dump-type%u-%u-%llu",
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&record->type, &part, &time) == 3) {
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&record->type, &part, &time) == 3) {
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/*
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/*
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* Check if an old format,
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* Check if an old format,
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@ -250,9 +250,10 @@ static int efi_pstore_write(struct pstore_record *record)
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/* Since we copy the entire length of name, make sure it is wiped. */
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/* Since we copy the entire length of name, make sure it is wiped. */
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memset(name, 0, sizeof(name));
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memset(name, 0, sizeof(name));
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snprintf(name, sizeof(name), "dump-type%u-%u-%d-%lu-%c",
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snprintf(name, sizeof(name), "dump-type%u-%u-%d-%lld-%c",
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record->type, record->part, record->count,
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record->type, record->part, record->count,
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record->time.tv_sec, record->compressed ? 'C' : 'D');
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(long long)record->time.tv_sec,
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record->compressed ? 'C' : 'D');
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for (i = 0; i < DUMP_NAME_LEN; i++)
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for (i = 0; i < DUMP_NAME_LEN; i++)
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efi_name[i] = name[i];
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efi_name[i] = name[i];
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@ -327,15 +328,15 @@ static int efi_pstore_erase(struct pstore_record *record)
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char name[DUMP_NAME_LEN];
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char name[DUMP_NAME_LEN];
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int ret;
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int ret;
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snprintf(name, sizeof(name), "dump-type%u-%u-%d-%lu",
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snprintf(name, sizeof(name), "dump-type%u-%u-%d-%lld",
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record->type, record->part, record->count,
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record->type, record->part, record->count,
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record->time.tv_sec);
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(long long)record->time.tv_sec);
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ret = efi_pstore_erase_name(name);
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ret = efi_pstore_erase_name(name);
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if (ret != -ENOENT)
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if (ret != -ENOENT)
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return ret;
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return ret;
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snprintf(name, sizeof(name), "dump-type%u-%u-%lu",
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snprintf(name, sizeof(name), "dump-type%u-%u-%lld",
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record->type, record->part, record->time.tv_sec);
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record->type, record->part, (long long)record->time.tv_sec);
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ret = efi_pstore_erase_name(name);
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ret = efi_pstore_erase_name(name);
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return ret;
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return ret;
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@ -392,7 +392,8 @@ int pstore_mkfile(struct dentry *root, struct pstore_record *record)
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inode->i_private = private;
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inode->i_private = private;
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if (record->time.tv_sec)
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if (record->time.tv_sec)
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inode->i_mtime = inode->i_ctime = record->time;
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inode->i_mtime = inode->i_ctime =
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timespec64_to_timespec(record->time);
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d_add(dentry, inode);
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d_add(dentry, inode);
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@ -328,7 +328,7 @@ void pstore_record_init(struct pstore_record *record,
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record->psi = psinfo;
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record->psi = psinfo;
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/* Report zeroed timestamp if called before timekeeping has resumed. */
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/* Report zeroed timestamp if called before timekeeping has resumed. */
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record->time = ns_to_timespec(ktime_get_real_fast_ns());
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record->time = ns_to_timespec64(ktime_get_real_fast_ns());
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}
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}
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/*
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/*
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@ -38,6 +38,11 @@
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#define RAMOOPS_KERNMSG_HDR "===="
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#define RAMOOPS_KERNMSG_HDR "===="
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#define MIN_MEM_SIZE 4096UL
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#define MIN_MEM_SIZE 4096UL
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#if __BITS_PER_LONG == 64
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# define TVSEC_FMT "%ld"
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#else
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# define TVSEC_FMT "%lld"
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#endif
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static ulong record_size = MIN_MEM_SIZE;
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static ulong record_size = MIN_MEM_SIZE;
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module_param(record_size, ulong, 0400);
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module_param(record_size, ulong, 0400);
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@ -153,21 +158,23 @@ ramoops_get_next_prz(struct persistent_ram_zone *przs[], uint *c, uint max,
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return prz;
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return prz;
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}
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}
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static int ramoops_read_kmsg_hdr(char *buffer, struct timespec *time,
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static int ramoops_read_kmsg_hdr(char *buffer, struct timespec64 *time,
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bool *compressed)
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bool *compressed)
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{
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{
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char data_type;
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char data_type;
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int header_length = 0;
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int header_length = 0;
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if (sscanf(buffer, RAMOOPS_KERNMSG_HDR "%lu.%lu-%c\n%n", &time->tv_sec,
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if (sscanf(buffer, RAMOOPS_KERNMSG_HDR TVSEC_FMT ".%lu-%c\n%n",
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&time->tv_nsec, &data_type, &header_length) == 3) {
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&time->tv_sec, &time->tv_nsec, &data_type,
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&header_length) == 3) {
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if (data_type == 'C')
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if (data_type == 'C')
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*compressed = true;
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*compressed = true;
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else
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else
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*compressed = false;
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*compressed = false;
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} else if (sscanf(buffer, RAMOOPS_KERNMSG_HDR "%lu.%lu\n%n",
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} else if (sscanf(buffer, RAMOOPS_KERNMSG_HDR TVSEC_FMT ".%lu\n%n",
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&time->tv_sec, &time->tv_nsec, &header_length) == 2) {
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&time->tv_sec, &time->tv_nsec,
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*compressed = false;
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&header_length) == 2) {
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*compressed = false;
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} else {
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} else {
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time->tv_sec = 0;
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time->tv_sec = 0;
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time->tv_nsec = 0;
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time->tv_nsec = 0;
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@ -360,7 +367,7 @@ static size_t ramoops_write_kmsg_hdr(struct persistent_ram_zone *prz,
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char *hdr;
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char *hdr;
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size_t len;
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size_t len;
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hdr = kasprintf(GFP_ATOMIC, RAMOOPS_KERNMSG_HDR "%lu.%lu-%c\n",
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hdr = kasprintf(GFP_ATOMIC, RAMOOPS_KERNMSG_HDR TVSEC_FMT ".%lu-%c\n",
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record->time.tv_sec,
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record->time.tv_sec,
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record->time.tv_nsec / 1000,
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record->time.tv_nsec / 1000,
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record->compressed ? 'C' : 'D');
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record->compressed ? 'C' : 'D');
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@ -71,7 +71,7 @@ struct pstore_record {
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struct pstore_info *psi;
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struct pstore_info *psi;
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enum pstore_type_id type;
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enum pstore_type_id type;
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u64 id;
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u64 id;
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struct timespec time;
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struct timespec64 time;
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char *buf;
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char *buf;
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ssize_t size;
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ssize_t size;
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ssize_t ecc_notice_size;
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ssize_t ecc_notice_size;
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