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authorKees Cook <keescook@chromium.org>2017-05-19 15:10:31 -0700
committerKees Cook <keescook@chromium.org>2017-05-31 10:13:44 -0700
commite581ca813a40a4ee53c862d8f6303f486c4b4c34 (patch)
tree66ce296957a12b61e9a583d756b6a0120eb9ded8 /fs/pstore
parentefb74e4bb1abeb5bd4c9296b2adfdc253561bc72 (diff)
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pstore: Create common record initializer
In preparation for setting timestamps in the pstore core, create a common initializer routine, instead of using static initializers. Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'fs/pstore')
-rw-r--r--fs/pstore/internal.h2
-rw-r--r--fs/pstore/platform.c35
-rw-r--r--fs/pstore/pmsg.c10
3 files changed, 28 insertions, 19 deletions
diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h
index c416e653dc4f..58051265626f 100644
--- a/fs/pstore/internal.h
+++ b/fs/pstore/internal.h
@@ -30,5 +30,7 @@ extern void pstore_get_backend_records(struct pstore_info *psi,
extern int pstore_mkfile(struct dentry *root,
struct pstore_record *record);
extern bool pstore_is_mounted(void);
+extern void pstore_record_init(struct pstore_record *record,
+ struct pstore_info *psi);
#endif
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index d8289ce00f99..7798041f3fba 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -474,6 +474,14 @@ static size_t copy_kmsg_to_buffer(int hsize, size_t len)
return total_len;
}
+void pstore_record_init(struct pstore_record *record,
+ struct pstore_info *psinfo)
+{
+ memset(record, 0, sizeof(*record));
+
+ record->psi = psinfo;
+}
+
/*
* callback from kmsg_dump. (s2,l2) has the most recently
* written bytes, older bytes are in (s1,l1). Save as much
@@ -509,15 +517,14 @@ static void pstore_dump(struct kmsg_dumper *dumper,
int header_size;
int zipped_len = -1;
size_t dump_size;
- struct pstore_record record = {
- .type = PSTORE_TYPE_DMESG,
- .count = oopscount,
- .reason = reason,
- .part = part,
- .compressed = false,
- .buf = psinfo->buf,
- .psi = psinfo,
- };
+ struct pstore_record record;
+
+ pstore_record_init(&record, psinfo);
+ record.type = PSTORE_TYPE_DMESG;
+ record.count = oopscount;
+ record.reason = reason;
+ record.part = part;
+ record.buf = psinfo->buf;
if (big_oops_buf && is_locked) {
dst = big_oops_buf;
@@ -587,12 +594,12 @@ static void pstore_console_write(struct console *con, const char *s, unsigned c)
const char *e = s + c;
while (s < e) {
- struct pstore_record record = {
- .type = PSTORE_TYPE_CONSOLE,
- .psi = psinfo,
- };
+ struct pstore_record record;
unsigned long flags;
+ pstore_record_init(&record, psinfo);
+ record.type = PSTORE_TYPE_CONSOLE;
+
if (c > psinfo->bufsize)
c = psinfo->bufsize;
@@ -845,7 +852,7 @@ void pstore_get_backend_records(struct pstore_info *psi,
pr_err("out of memory creating record\n");
break;
}
- record->psi = psi;
+ pstore_record_init(record, psi);
record->size = psi->read(record);
diff --git a/fs/pstore/pmsg.c b/fs/pstore/pmsg.c
index 209755e0d7c8..24db02de1787 100644
--- a/fs/pstore/pmsg.c
+++ b/fs/pstore/pmsg.c
@@ -22,16 +22,16 @@ static DEFINE_MUTEX(pmsg_lock);
static ssize_t write_pmsg(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
- struct pstore_record record = {
- .type = PSTORE_TYPE_PMSG,
- .size = count,
- .psi = psinfo,
- };
+ struct pstore_record record;
int ret;
if (!count)
return 0;
+ pstore_record_init(&record, psinfo);
+ record.type = PSTORE_TYPE_PMSG;
+ record.size = count;
+
/* check outside lock, page in any data. write_user also checks */
if (!access_ok(VERIFY_READ, buf, count))
return -EFAULT;
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