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Subject[PATCH 1/2] coredump: pass siginfo_t* to do_coredump() and below, not merely signr
Date
This is a preparatory patch for the introduction of NT_SIGINFO elf note.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
fs/binfmt_aout.c | 2 +-
fs/binfmt_elf.c | 14 +++++++-------
fs/binfmt_elf_fdpic.c | 6 +++---
fs/binfmt_flat.c | 2 +-
fs/coredump.c | 10 +++++-----
include/linux/binfmts.h | 2 +-
include/linux/coredump.h | 4 ++--
kernel/signal.c | 2 +-
8 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index d146e18..3a65adf 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -89,7 +89,7 @@ static int aout_core_dump(struct coredump_params *cprm)
current->flags |= PF_DUMPCORE;
strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm));
dump.u_ar0 = offsetof(struct user, regs);
- dump.signal = cprm->signr;
+ dump.signal = cprm->info->si_signo;
aout_dump_thread(cprm->regs, &dump);

/* If the size of the dump file exceeds the rlimit, then see what would happen
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 1b4efbc..41a40de 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1479,7 +1479,7 @@ static int fill_thread_core_info(struct elf_thread_core_info *t,

static int fill_note_info(struct elfhdr *elf, int phdrs,
struct elf_note_info *info,
- long signr, struct pt_regs *regs)
+ siginfo_t *siginfo, struct pt_regs *regs)
{
struct task_struct *dump_task = current;
const struct user_regset_view *view = task_user_regset_view(dump_task);
@@ -1549,7 +1549,7 @@ static int fill_note_info(struct elfhdr *elf, int phdrs,
* Now fill in each thread's information.
*/
for (t = info->thread; t != NULL; t = t->next)
- if (!fill_thread_core_info(t, view, signr, &info->size))
+ if (!fill_thread_core_info(t, view, siginfo->si_signo, &info->size))
return 0;

/*
@@ -1712,14 +1712,14 @@ static int elf_note_info_init(struct elf_note_info *info)

static int fill_note_info(struct elfhdr *elf, int phdrs,
struct elf_note_info *info,
- long signr, struct pt_regs *regs)
+ siginfo_t *siginfo, struct pt_regs *regs)
{
struct list_head *t;

if (!elf_note_info_init(info))
return 0;

- if (signr) {
+ if (siginfo->si_signo) {
struct core_thread *ct;
struct elf_thread_status *ets;

@@ -1737,13 +1737,13 @@ static int fill_note_info(struct elfhdr *elf, int phdrs,
int sz;

ets = list_entry(t, struct elf_thread_status, list);
- sz = elf_dump_thread_status(signr, ets);
+ sz = elf_dump_thread_status(siginfo->si_signo, ets);
info->thread_status_size += sz;
}
}
/* now collect the dump for the current */
memset(info->prstatus, 0, sizeof(*info->prstatus));
- fill_prstatus(info->prstatus, current, signr);
+ fill_prstatus(info->prstatus, current, siginfo->si_signo);
elf_core_copy_regs(&info->prstatus->pr_reg, regs);

/* Set up header */
@@ -1950,7 +1950,7 @@ static int elf_core_dump(struct coredump_params *cprm)
* Collect all the non-memory information about the process for the
* notes. This also sets up the file header.
*/
- if (!fill_note_info(elf, e_phnum, &info, cprm->signr, cprm->regs))
+ if (!fill_note_info(elf, e_phnum, &info, cprm->info, cprm->regs))
goto cleanup;

has_dumped = 1;
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 3d8fae0..6554f54 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1641,7 +1641,7 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
goto cleanup;
#endif

- if (cprm->signr) {
+ if (cprm->info->si_signo) {
struct core_thread *ct;
struct elf_thread_status *tmp;

@@ -1660,13 +1660,13 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
int sz;

tmp = list_entry(t, struct elf_thread_status, list);
- sz = elf_dump_thread_status(cprm->signr, tmp);
+ sz = elf_dump_thread_status(cprm->info->si_signo, tmp);
thread_status_size += sz;
}
}

/* now collect the dump for the current */
- fill_prstatus(prstatus, current, cprm->signr);
+ fill_prstatus(prstatus, current, cprm->info->si_signo);
elf_core_copy_regs(&prstatus->pr_reg, cprm->regs);

segs = current->mm->map_count;
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index 178cb70..ebe6feb 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -107,7 +107,7 @@ static struct linux_binfmt flat_format = {
static int flat_core_dump(struct coredump_params *cprm)
{
printk("Process %s:%d received signr %d and should have core dumped\n",
- current->comm, current->pid, (int) cprm->signr);
+ current->comm, current->pid, (int) cprm->info->si_signo);
return(1);
}

diff --git a/fs/coredump.c b/fs/coredump.c
index 1935b4d..0027ec0 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -463,7 +463,7 @@ static int umh_pipe_setup(struct subprocess_info *info, struct cred *new)
return 0;
}

-void do_coredump(long signr, int exit_code, struct pt_regs *regs)
+void do_coredump(siginfo_t *info, struct pt_regs *regs)
{
struct core_state core_state;
struct core_name cn;
@@ -477,7 +477,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
bool need_nonrelative = false;
static atomic_t core_dump_count = ATOMIC_INIT(0);
struct coredump_params cprm = {
- .signr = signr,
+ .info = info,
.regs = regs,
.limit = rlimit(RLIMIT_CORE),
/*
@@ -488,7 +488,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
.mm_flags = mm->flags,
};

- audit_core_dumps(signr);
+ audit_core_dumps(info->si_signo);

binfmt = mm->binfmt;
if (!binfmt || !binfmt->core_dump)
@@ -512,7 +512,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
need_nonrelative = true;
}

- retval = coredump_wait(exit_code, &core_state);
+ retval = coredump_wait(info->si_signo, &core_state);
if (retval < 0)
goto fail_creds;

@@ -524,7 +524,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
*/
clear_thread_flag(TIF_SIGPENDING);

- ispipe = format_corename(&cn, signr);
+ ispipe = format_corename(&cn, info->si_signo);

if (ispipe) {
int dump_count;
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 52fb2eb..f2d1445 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -74,7 +74,7 @@ struct linux_binprm {

/* Function parameter for binfmt->coredump */
struct coredump_params {
- long signr;
+ siginfo_t *info;
struct pt_regs *regs;
struct file *file;
unsigned long limit;
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 42f9752..be939ce 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -12,9 +12,9 @@
extern int dump_write(struct file *file, const void *addr, int nr);
extern int dump_seek(struct file *file, loff_t off);
#ifdef CONFIG_COREDUMP
-extern void do_coredump(long signr, int exit_code, struct pt_regs *regs);
+extern void do_coredump(siginfo_t *info, struct pt_regs *regs);
#else
-static inline void do_coredump(long signr, int exit_code, struct pt_regs *regs) {}
+static inline void do_coredump(siginfo_t *info, struct pt_regs *regs) {}
#endif

#endif /* _LINUX_COREDUMP_H */
diff --git a/kernel/signal.c b/kernel/signal.c
index fb4fd72..546f23d 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2370,7 +2370,7 @@ relock:
* first and our do_group_exit call below will use
* that value and ignore the one we pass it.
*/
- do_coredump(info->si_signo, info->si_signo, regs);
+ do_coredump(info, regs);
}

/*
--
1.7.7.6


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