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Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse Source 
Pull fdpick coredump update from Al Viro:
 "Switches fdpic coredumps away from original aout dumping primitives to
  the same kind of regset use as regular elf coredumps do"

* 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  [elf-fdpic] switch coredump to regsets
  [elf-fdpic] use elf_dump_thread_status() for the dumper thread as well
  [elf-fdpic] move allocation of elf_thread_status into elf_dump_thread_status()
  [elf-fdpic] coredump: don't bother with cyclic list for per-thread objects
  kill elf_fpxregs_t
  take fdpic-related parts of elf_prstatus out
  unexport linux/elfcore.h
This commit is contained in:
Linus Torvalds 2020-08-07 13:29:39 -07:00
commit 0f43283be7
10 changed files with 146 additions and 268 deletions
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2
arch/ia64/include/asm/elf.h
View File

@ -179,8 +179,6 @@ extern void ia64_init_addr_space (void);
#define ELF_AR_SSD_OFFSET (56 * sizeof(elf_greg_t)) #define ELF_AR_SSD_OFFSET (56 * sizeof(elf_greg_t))
#define ELF_AR_END_OFFSET (57 * sizeof(elf_greg_t)) #define ELF_AR_END_OFFSET (57 * sizeof(elf_greg_t))
typedef unsigned long elf_fpxregset_t;
typedef unsigned long elf_greg_t; typedef unsigned long elf_greg_t;
typedef elf_greg_t elf_gregset_t[ELF_NGREG]; typedef elf_greg_t elf_gregset_t[ELF_NGREG];

2
arch/powerpc/include/asm/elf.h
View File

@ -53,8 +53,6 @@ static inline void ppc_elf_core_copy_regs(elf_gregset_t elf_regs,
} }
#define ELF_CORE_COPY_REGS(gregs, regs) ppc_elf_core_copy_regs(gregs, regs); #define ELF_CORE_COPY_REGS(gregs, regs) ppc_elf_core_copy_regs(gregs, regs);
typedef elf_vrregset_t elf_fpxregset_t;
/* ELF_HWCAP yields a mask that user programs can use to figure out what /* ELF_HWCAP yields a mask that user programs can use to figure out what
instruction set this cpu supports. This could be done in userspace, instruction set this cpu supports. This could be done in userspace,
but it's not easy, and we've already done it here. */ but it's not easy, and we've already done it here. */

2
arch/x86/include/asm/elf.h
View File

@ -21,8 +21,6 @@ typedef struct user_i387_struct elf_fpregset_t;
#ifdef __i386__ #ifdef __i386__
typedef struct user_fxsr_struct elf_fpxregset_t;
#define R_386_NONE 0 #define R_386_NONE 0
#define R_386_32 1 #define R_386_32 1
#define R_386_PC32 2 #define R_386_PC32 2

30
fs/binfmt_elf.c
View File

@ -2038,9 +2038,6 @@ struct elf_thread_status
struct elf_prstatus prstatus; /* NT_PRSTATUS */ struct elf_prstatus prstatus; /* NT_PRSTATUS */
elf_fpregset_t fpu; /* NT_PRFPREG */ elf_fpregset_t fpu; /* NT_PRFPREG */
struct task_struct *thread; struct task_struct *thread;
#ifdef ELF_CORE_COPY_XFPREGS
elf_fpxregset_t xfpu; /* ELF_CORE_XFPREG_TYPE */
#endif
struct memelfnote notes[3]; struct memelfnote notes[3];
int num_notes; int num_notes;
}; };
@ -2071,15 +2068,6 @@ static int elf_dump_thread_status(long signr, struct elf_thread_status *t)
t->num_notes++; t->num_notes++;
sz += notesize(&t->notes[1]); sz += notesize(&t->notes[1]);
} }
#ifdef ELF_CORE_COPY_XFPREGS
if (elf_core_copy_task_xfpregs(p, &t->xfpu)) {
fill_note(&t->notes[2], "LINUX", ELF_CORE_XFPREG_TYPE,
sizeof(t->xfpu), &t->xfpu);
t->num_notes++;
sz += notesize(&t->notes[2]);
}
#endif
return sz; return sz;
} }
@ -2090,9 +2078,6 @@ struct elf_note_info {
struct elf_prpsinfo *psinfo; /* NT_PRPSINFO */ struct elf_prpsinfo *psinfo; /* NT_PRPSINFO */
struct list_head thread_list; struct list_head thread_list;
elf_fpregset_t *fpu; elf_fpregset_t *fpu;
#ifdef ELF_CORE_COPY_XFPREGS
elf_fpxregset_t *xfpu;
#endif
user_siginfo_t csigdata; user_siginfo_t csigdata;
int thread_status_size; int thread_status_size;
int numnote; int numnote;
@ -2116,11 +2101,6 @@ static int elf_note_info_init(struct elf_note_info *info)
info->fpu = kmalloc(sizeof(*info->fpu), GFP_KERNEL); info->fpu = kmalloc(sizeof(*info->fpu), GFP_KERNEL);
if (!info->fpu) if (!info->fpu)
return 0; return 0;
#ifdef ELF_CORE_COPY_XFPREGS
info->xfpu = kmalloc(sizeof(*info->xfpu), GFP_KERNEL);
if (!info->xfpu)
return 0;
#endif
return 1; return 1;
} }
@ -2184,13 +2164,6 @@ static int fill_note_info(struct elfhdr *elf, int phdrs,
if (info->prstatus->pr_fpvalid) if (info->prstatus->pr_fpvalid)
fill_note(info->notes + info->numnote++, fill_note(info->notes + info->numnote++,
"CORE", NT_PRFPREG, sizeof(*info->fpu), info->fpu); "CORE", NT_PRFPREG, sizeof(*info->fpu), info->fpu);
#ifdef ELF_CORE_COPY_XFPREGS
if (elf_core_copy_task_xfpregs(current, info->xfpu))
fill_note(info->notes + info->numnote++,
"LINUX", ELF_CORE_XFPREG_TYPE,
sizeof(*info->xfpu), info->xfpu);
#endif
return 1; return 1;
} }
@ -2243,9 +2216,6 @@ static void free_note_info(struct elf_note_info *info)
kfree(info->psinfo); kfree(info->psinfo);
kfree(info->notes); kfree(info->notes);
kfree(info->fpu); kfree(info->fpu);
#ifdef ELF_CORE_COPY_XFPREGS
kfree(info->xfpu);
#endif
} }
#endif #endif

205
fs/binfmt_elf_fdpic.c
View File

@ -35,6 +35,7 @@
#include <linux/elfcore.h> #include <linux/elfcore.h>
#include <linux/coredump.h> #include <linux/coredump.h>
#include <linux/dax.h> #include <linux/dax.h>
#include <linux/regset.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
#include <asm/param.h> #include <asm/param.h>
@ -1188,6 +1189,32 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params,
*/ */
#ifdef CONFIG_ELF_CORE #ifdef CONFIG_ELF_CORE
struct elf_prstatus_fdpic
{
struct elf_siginfo pr_info; /* Info associated with signal */
short pr_cursig; /* Current signal */
unsigned long pr_sigpend; /* Set of pending signals */
unsigned long pr_sighold; /* Set of held signals */
pid_t pr_pid;
pid_t pr_ppid;
pid_t pr_pgrp;
pid_t pr_sid;
struct __kernel_old_timeval pr_utime; /* User time */
struct __kernel_old_timeval pr_stime; /* System time */
struct __kernel_old_timeval pr_cutime; /* Cumulative user time */
struct __kernel_old_timeval pr_cstime; /* Cumulative system time */
elf_gregset_t pr_reg; /* GP registers */
/* When using FDPIC, the loadmap addresses need to be communicated
* to GDB in order for GDB to do the necessary relocations. The
* fields (below) used to communicate this information are placed
* immediately after ``pr_reg'', so that the loadmap addresses may
* be viewed as part of the register set if so desired.
*/
unsigned long pr_exec_fdpic_loadmap;
unsigned long pr_interp_fdpic_loadmap;
int pr_fpvalid; /* True if math co-processor being used. */
};
/* /*
* Decide whether a segment is worth dumping; default is yes to be * Decide whether a segment is worth dumping; default is yes to be
* sure (missing info is worse than too much; etc). * sure (missing info is worse than too much; etc).
@ -1344,7 +1371,7 @@ static inline void fill_note(struct memelfnote *note, const char *name, int type
* fill up all the fields in prstatus from the given task struct, except * fill up all the fields in prstatus from the given task struct, except
* registers which need to be filled up separately. * registers which need to be filled up separately.
*/ */
static void fill_prstatus(struct elf_prstatus *prstatus, static void fill_prstatus(struct elf_prstatus_fdpic *prstatus,
struct task_struct *p, long signr) struct task_struct *p, long signr)
{ {
prstatus->pr_info.si_signo = prstatus->pr_cursig = signr; prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
@ -1426,14 +1453,10 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
/* Here is the structure in which status of each thread is captured. */ /* Here is the structure in which status of each thread is captured. */
struct elf_thread_status struct elf_thread_status
{ {
struct list_head list; struct elf_thread_status *next;
struct elf_prstatus prstatus; /* NT_PRSTATUS */ struct elf_prstatus_fdpic prstatus; /* NT_PRSTATUS */
elf_fpregset_t fpu; /* NT_PRFPREG */ elf_fpregset_t fpu; /* NT_PRFPREG */
struct task_struct *thread; struct memelfnote notes[2];
#ifdef ELF_CORE_COPY_XFPREGS
elf_fpxregset_t xfpu; /* ELF_CORE_XFPREG_TYPE */
#endif
struct memelfnote notes[3];
int num_notes; int num_notes;
}; };
@ -1442,38 +1465,44 @@ struct elf_thread_status
* we need to keep a linked list of every thread's pr_status and then create * we need to keep a linked list of every thread's pr_status and then create
* a single section for them in the final core file. * a single section for them in the final core file.
*/ */
static int elf_dump_thread_status(long signr, struct elf_thread_status *t) static struct elf_thread_status *elf_dump_thread_status(long signr, struct task_struct *p, int *sz)
{ {
struct task_struct *p = t->thread; const struct user_regset_view *view = task_user_regset_view(p);
int sz = 0; struct elf_thread_status *t;
int i, ret;
t->num_notes = 0; t = kzalloc(sizeof(struct elf_thread_status), GFP_KERNEL);
if (!t)
return t;
fill_prstatus(&t->prstatus, p, signr); fill_prstatus(&t->prstatus, p, signr);
elf_core_copy_task_regs(p, &t->prstatus.pr_reg); regset_get(p, &view->regsets[0],
sizeof(t->prstatus.pr_reg), &t->prstatus.pr_reg);
fill_note(&t->notes[0], "CORE", NT_PRSTATUS, sizeof(t->prstatus), fill_note(&t->notes[0], "CORE", NT_PRSTATUS, sizeof(t->prstatus),
&t->prstatus); &t->prstatus);
t->num_notes++; t->num_notes++;
sz += notesize(&t->notes[0]); *sz += notesize(&t->notes[0]);
for (i = 1; i < view->n; ++i) {
const struct user_regset *regset = &view->regsets[i];
if (regset->core_note_type != NT_PRFPREG)
continue;
if (regset->active && regset->active(p, regset) <= 0)
continue;
ret = regset_get(p, regset, sizeof(t->fpu), &t->fpu);
if (ret >= 0)
t->prstatus.pr_fpvalid = 1;
break;
}
t->prstatus.pr_fpvalid = elf_core_copy_task_fpregs(p, NULL, &t->fpu);
if (t->prstatus.pr_fpvalid) { if (t->prstatus.pr_fpvalid) {
fill_note(&t->notes[1], "CORE", NT_PRFPREG, sizeof(t->fpu), fill_note(&t->notes[1], "CORE", NT_PRFPREG, sizeof(t->fpu),
&t->fpu); &t->fpu);
t->num_notes++; t->num_notes++;
sz += notesize(&t->notes[1]); *sz += notesize(&t->notes[1]);
} }
return t;
#ifdef ELF_CORE_COPY_XFPREGS
if (elf_core_copy_task_xfpregs(p, &t->xfpu)) {
fill_note(&t->notes[2], "LINUX", ELF_CORE_XFPREG_TYPE,
sizeof(t->xfpu), &t->xfpu);
t->num_notes++;
sz += notesize(&t->notes[2]);
}
#endif
return sz;
} }
static void fill_extnum_info(struct elfhdr *elf, struct elf_shdr *shdr4extnum, static void fill_extnum_info(struct elfhdr *elf, struct elf_shdr *shdr4extnum,
@ -1552,23 +1581,15 @@ static size_t elf_core_vma_data_size(unsigned long mm_flags)
*/ */
static int elf_fdpic_core_dump(struct coredump_params *cprm) static int elf_fdpic_core_dump(struct coredump_params *cprm)
{ {
#define NUM_NOTES 6
int has_dumped = 0; int has_dumped = 0;
int segs; int segs;
int i; int i;
struct vm_area_struct *vma; struct vm_area_struct *vma;
struct elfhdr *elf = NULL; struct elfhdr *elf = NULL;
loff_t offset = 0, dataoff; loff_t offset = 0, dataoff;
int numnote; struct memelfnote psinfo_note, auxv_note;
struct memelfnote *notes = NULL;
struct elf_prstatus *prstatus = NULL; /* NT_PRSTATUS */
struct elf_prpsinfo *psinfo = NULL; /* NT_PRPSINFO */ struct elf_prpsinfo *psinfo = NULL; /* NT_PRPSINFO */
LIST_HEAD(thread_list); struct elf_thread_status *thread_list = NULL;
struct list_head *t;
elf_fpregset_t *fpu = NULL;
#ifdef ELF_CORE_COPY_XFPREGS
elf_fpxregset_t *xfpu = NULL;
#endif
int thread_status_size = 0; int thread_status_size = 0;
elf_addr_t *auxv; elf_addr_t *auxv;
struct elf_phdr *phdr4note = NULL; struct elf_phdr *phdr4note = NULL;
@ -1594,47 +1615,28 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
elf = kmalloc(sizeof(*elf), GFP_KERNEL); elf = kmalloc(sizeof(*elf), GFP_KERNEL);
if (!elf) if (!elf)
goto end_coredump; goto end_coredump;
prstatus = kzalloc(sizeof(*prstatus), GFP_KERNEL);
if (!prstatus)
goto end_coredump;
psinfo = kmalloc(sizeof(*psinfo), GFP_KERNEL); psinfo = kmalloc(sizeof(*psinfo), GFP_KERNEL);
if (!psinfo) if (!psinfo)
goto end_coredump; goto end_coredump;
notes = kmalloc_array(NUM_NOTES, sizeof(struct memelfnote),
GFP_KERNEL);
if (!notes)
goto end_coredump;
fpu = kmalloc(sizeof(*fpu), GFP_KERNEL);
if (!fpu)
goto end_coredump;
#ifdef ELF_CORE_COPY_XFPREGS
xfpu = kmalloc(sizeof(*xfpu), GFP_KERNEL);
if (!xfpu)
goto end_coredump;
#endif
for (ct = current->mm->core_state->dumper.next; for (ct = current->mm->core_state->dumper.next;
ct; ct = ct->next) { ct; ct = ct->next) {
tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); tmp = elf_dump_thread_status(cprm->siginfo->si_signo,
ct->task, &thread_status_size);
if (!tmp) if (!tmp)
goto end_coredump; goto end_coredump;
tmp->thread = ct->task; tmp->next = thread_list;
list_add(&tmp->list, &thread_list); thread_list = tmp;
}
list_for_each(t, &thread_list) {
struct elf_thread_status *tmp;
int sz;
tmp = list_entry(t, struct elf_thread_status, list);
sz = elf_dump_thread_status(cprm->siginfo->si_signo, tmp);
thread_status_size += sz;
} }
/* now collect the dump for the current */ /* now collect the dump for the current */
fill_prstatus(prstatus, current, cprm->siginfo->si_signo); tmp = elf_dump_thread_status(cprm->siginfo->si_signo,
elf_core_copy_regs(&prstatus->pr_reg, cprm->regs); current, &thread_status_size);
if (!tmp)
goto end_coredump;
tmp->next = thread_list;
thread_list = tmp;
segs = current->mm->map_count; segs = current->mm->map_count;
segs += elf_core_extra_phdrs(); segs += elf_core_extra_phdrs();
@ -1656,51 +1658,28 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
* with info from their /proc. * with info from their /proc.
*/ */
fill_note(notes + 0, "CORE", NT_PRSTATUS, sizeof(*prstatus), prstatus);
fill_psinfo(psinfo, current->group_leader, current->mm); fill_psinfo(psinfo, current->group_leader, current->mm);
fill_note(notes + 1, "CORE", NT_PRPSINFO, sizeof(*psinfo), psinfo); fill_note(&psinfo_note, "CORE", NT_PRPSINFO, sizeof(*psinfo), psinfo);
thread_status_size += notesize(&psinfo_note);
numnote = 2;
auxv = (elf_addr_t *) current->mm->saved_auxv; auxv = (elf_addr_t *) current->mm->saved_auxv;
i = 0; i = 0;
do do
i += 2; i += 2;
while (auxv[i - 2] != AT_NULL); while (auxv[i - 2] != AT_NULL);
fill_note(&notes[numnote++], "CORE", NT_AUXV, fill_note(&auxv_note, "CORE", NT_AUXV, i * sizeof(elf_addr_t), auxv);
i * sizeof(elf_addr_t), auxv); thread_status_size += notesize(&auxv_note);
/* Try to dump the FPU. */ offset = sizeof(*elf); /* Elf header */
if ((prstatus->pr_fpvalid =
elf_core_copy_task_fpregs(current, cprm->regs, fpu)))
fill_note(notes + numnote++,
"CORE", NT_PRFPREG, sizeof(*fpu), fpu);
#ifdef ELF_CORE_COPY_XFPREGS
if (elf_core_copy_task_xfpregs(current, xfpu))
fill_note(notes + numnote++,
"LINUX", ELF_CORE_XFPREG_TYPE, sizeof(*xfpu), xfpu);
#endif
offset += sizeof(*elf); /* Elf header */
offset += segs * sizeof(struct elf_phdr); /* Program headers */ offset += segs * sizeof(struct elf_phdr); /* Program headers */
/* Write notes phdr entry */ /* Write notes phdr entry */
{ phdr4note = kmalloc(sizeof(*phdr4note), GFP_KERNEL);
int sz = 0; if (!phdr4note)
goto end_coredump;
for (i = 0; i < numnote; i++) fill_elf_note_phdr(phdr4note, thread_status_size, offset);
sz += notesize(notes + i); offset += thread_status_size;
sz += thread_status_size;
phdr4note = kmalloc(sizeof(*phdr4note), GFP_KERNEL);
if (!phdr4note)
goto end_coredump;
fill_elf_note_phdr(phdr4note, sz, offset);
offset += sz;
}
/* Page-align dumped data */ /* Page-align dumped data */
dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE); dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE);
@ -1753,15 +1732,18 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
goto end_coredump; goto end_coredump;
/* write out the notes section */ /* write out the notes section */
for (i = 0; i < numnote; i++) if (!writenote(thread_list->notes, cprm))
if (!writenote(notes + i, cprm)) goto end_coredump;
if (!writenote(&psinfo_note, cprm))
goto end_coredump;
if (!writenote(&auxv_note, cprm))
goto end_coredump;
for (i = 1; i < thread_list->num_notes; i++)
if (!writenote(thread_list->notes + i, cprm))
goto end_coredump; goto end_coredump;
/* write out the thread status notes section */ /* write out the thread status notes section */
list_for_each(t, &thread_list) { for (tmp = thread_list->next; tmp; tmp = tmp->next) {
struct elf_thread_status *tmp =
list_entry(t, struct elf_thread_status, list);
for (i = 0; i < tmp->num_notes; i++) for (i = 0; i < tmp->num_notes; i++)
if (!writenote(&tmp->notes[i], cprm)) if (!writenote(&tmp->notes[i], cprm))
goto end_coredump; goto end_coredump;
@ -1789,23 +1771,16 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
} }
end_coredump: end_coredump:
while (!list_empty(&thread_list)) { while (thread_list) {
struct list_head *tmp = thread_list.next; tmp = thread_list;
list_del(tmp); thread_list = thread_list->next;
kfree(list_entry(tmp, struct elf_thread_status, list)); kfree(tmp);
} }
kfree(phdr4note); kfree(phdr4note);
kfree(elf); kfree(elf);
kfree(prstatus);
kfree(psinfo); kfree(psinfo);
kfree(notes);
kfree(fpu);
kfree(shdr4extnum); kfree(shdr4extnum);
#ifdef ELF_CORE_COPY_XFPREGS
kfree(xfpu);
#endif
return has_dumped; return has_dumped;
#undef NUM_NOTES
} }
#endif /* CONFIG_ELF_CORE */ #endif /* CONFIG_ELF_CORE */

4
include/linux/elfcore-compat.h
View File

@ -32,10 +32,6 @@ struct compat_elf_prstatus
struct old_timeval32 pr_cutime; struct old_timeval32 pr_cutime;
struct old_timeval32 pr_cstime; struct old_timeval32 pr_cstime;
compat_elf_gregset_t pr_reg; compat_elf_gregset_t pr_reg;
#ifdef CONFIG_BINFMT_ELF_FDPIC
compat_ulong_t pr_exec_fdpic_loadmap;
compat_ulong_t pr_interp_fdpic_loadmap;
#endif
compat_int_t pr_fpvalid; compat_int_t pr_fpvalid;
}; };

66
include/linux/elfcore.h
View File

@ -5,12 +5,65 @@
#include <linux/user.h> #include <linux/user.h>
#include <linux/bug.h> #include <linux/bug.h>
#include <linux/sched/task_stack.h> #include <linux/sched/task_stack.h>
#include <linux/types.h>
#include <asm/elf.h> #include <linux/signal.h>
#include <uapi/linux/elfcore.h> #include <linux/time.h>
#include <linux/ptrace.h>
#include <linux/fs.h>
#include <linux/elf.h>
struct coredump_params; struct coredump_params;
struct elf_siginfo
{
int si_signo; /* signal number */
int si_code; /* extra code */
int si_errno; /* errno */
};
/*
* Definitions to generate Intel SVR4-like core files.
* These mostly have the same names as the SVR4 types with "elf_"
* tacked on the front to prevent clashes with linux definitions,
* and the typedef forms have been avoided. This is mostly like
* the SVR4 structure, but more Linuxy, with things that Linux does
* not support and which gdb doesn't really use excluded.
*/
struct elf_prstatus
{
struct elf_siginfo pr_info; /* Info associated with signal */
short pr_cursig; /* Current signal */
unsigned long pr_sigpend; /* Set of pending signals */
unsigned long pr_sighold; /* Set of held signals */
pid_t pr_pid;
pid_t pr_ppid;
pid_t pr_pgrp;
pid_t pr_sid;
struct __kernel_old_timeval pr_utime; /* User time */
struct __kernel_old_timeval pr_stime; /* System time */
struct __kernel_old_timeval pr_cutime; /* Cumulative user time */
struct __kernel_old_timeval pr_cstime; /* Cumulative system time */
elf_gregset_t pr_reg; /* GP registers */
int pr_fpvalid; /* True if math co-processor being used. */
};
#define ELF_PRARGSZ (80) /* Number of chars for args */
struct elf_prpsinfo
{
char pr_state; /* numeric process state */
char pr_sname; /* char for pr_state */
char pr_zomb; /* zombie */
char pr_nice; /* nice val */
unsigned long pr_flag; /* flags */
__kernel_uid_t pr_uid;
__kernel_gid_t pr_gid;
pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
/* Lots missing */
char pr_fname[16]; /* filename of executable */
char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
};
static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs) static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
{ {
#ifdef ELF_CORE_COPY_REGS #ifdef ELF_CORE_COPY_REGS
@ -51,13 +104,6 @@ static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_reg
#endif #endif
} }
#ifdef ELF_CORE_COPY_XFPREGS
static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
{
return ELF_CORE_COPY_XFPREGS(t, xfpu);
}
#endif
/* /*
* These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
* extra segments containing the gate DSO contents. Dumping its * extra segments containing the gate DSO contents. Dumping its

101
include/uapi/linux/elfcore.h
View File

@ -1,101 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_ELFCORE_H
#define _UAPI_LINUX_ELFCORE_H
#include <linux/types.h>
#include <linux/signal.h>
#include <linux/time.h>
#include <linux/ptrace.h>
#include <linux/elf.h>
#include <linux/fs.h>
struct elf_siginfo
{
int si_signo; /* signal number */
int si_code; /* extra code */
int si_errno; /* errno */
};
#ifndef __KERNEL__
typedef elf_greg_t greg_t;
typedef elf_gregset_t gregset_t;
typedef elf_fpregset_t fpregset_t;
typedef elf_fpxregset_t fpxregset_t;
#define NGREG ELF_NGREG
#endif
/*
* Definitions to generate Intel SVR4-like core files.
* These mostly have the same names as the SVR4 types with "elf_"
* tacked on the front to prevent clashes with linux definitions,
* and the typedef forms have been avoided. This is mostly like
* the SVR4 structure, but more Linuxy, with things that Linux does
* not support and which gdb doesn't really use excluded.
* Fields present but not used are marked with "XXX".
*/
struct elf_prstatus
{
#if 0
long pr_flags; /* XXX Process flags */
short pr_why; /* XXX Reason for process halt */
short pr_what; /* XXX More detailed reason */
#endif
struct elf_siginfo pr_info; /* Info associated with signal */
short pr_cursig; /* Current signal */
unsigned long pr_sigpend; /* Set of pending signals */
unsigned long pr_sighold; /* Set of held signals */
#if 0
struct sigaltstack pr_altstack; /* Alternate stack info */
struct sigaction pr_action; /* Signal action for current sig */
#endif
pid_t pr_pid;
pid_t pr_ppid;
pid_t pr_pgrp;
pid_t pr_sid;
struct __kernel_old_timeval pr_utime; /* User time */
struct __kernel_old_timeval pr_stime; /* System time */
struct __kernel_old_timeval pr_cutime; /* Cumulative user time */
struct __kernel_old_timeval pr_cstime; /* Cumulative system time */
#if 0
long pr_instr; /* Current instruction */
#endif
elf_gregset_t pr_reg; /* GP registers */
#ifdef CONFIG_BINFMT_ELF_FDPIC
/* When using FDPIC, the loadmap addresses need to be communicated
* to GDB in order for GDB to do the necessary relocations. The
* fields (below) used to communicate this information are placed
* immediately after ``pr_reg'', so that the loadmap addresses may
* be viewed as part of the register set if so desired.
*/
unsigned long pr_exec_fdpic_loadmap;
unsigned long pr_interp_fdpic_loadmap;
#endif
int pr_fpvalid; /* True if math co-processor being used. */
};
#define ELF_PRARGSZ (80) /* Number of chars for args */
struct elf_prpsinfo
{
char pr_state; /* numeric process state */
char pr_sname; /* char for pr_state */
char pr_zomb; /* zombie */
char pr_nice; /* nice val */
unsigned long pr_flag; /* flags */
__kernel_uid_t pr_uid;
__kernel_gid_t pr_gid;
pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
/* Lots missing */
char pr_fname[16]; /* filename of executable */
char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
};
#ifndef __KERNEL__
typedef struct elf_prstatus prstatus_t;
typedef struct elf_prpsinfo prpsinfo_t;
#define PRARGSZ ELF_PRARGSZ
#endif
#endif /* _UAPI_LINUX_ELFCORE_H */

1
scripts/headers_install.sh
View File

@ -86,7 +86,6 @@ arch/x86/include/uapi/asm/auxvec.h:CONFIG_X86_64
arch/x86/include/uapi/asm/mman.h:CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS arch/x86/include/uapi/asm/mman.h:CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
include/uapi/asm-generic/fcntl.h:CONFIG_64BIT include/uapi/asm-generic/fcntl.h:CONFIG_64BIT
include/uapi/linux/atmdev.h:CONFIG_COMPAT include/uapi/linux/atmdev.h:CONFIG_COMPAT
include/uapi/linux/elfcore.h:CONFIG_BINFMT_ELF_FDPIC
include/uapi/linux/eventpoll.h:CONFIG_PM_SLEEP include/uapi/linux/eventpoll.h:CONFIG_PM_SLEEP
include/uapi/linux/hw_breakpoint.h:CONFIG_HAVE_MIXED_BREAKPOINTS_REGS include/uapi/linux/hw_breakpoint.h:CONFIG_HAVE_MIXED_BREAKPOINTS_REGS
include/uapi/linux/pktcdvd.h:CONFIG_CDROM_PKTCDVD_WCACHE include/uapi/linux/pktcdvd.h:CONFIG_CDROM_PKTCDVD_WCACHE

1
usr/include/Makefile
View File

@ -28,7 +28,6 @@ no-header-test += linux/am437x-vpfe.h
no-header-test += linux/android/binder.h no-header-test += linux/android/binder.h
no-header-test += linux/android/binderfs.h no-header-test += linux/android/binderfs.h
no-header-test += linux/coda.h no-header-test += linux/coda.h
no-header-test += linux/elfcore.h
no-header-test += linux/errqueue.h no-header-test += linux/errqueue.h
no-header-test += linux/fsmap.h no-header-test += linux/fsmap.h
no-header-test += linux/hdlc/ioctl.h no-header-test += linux/hdlc/ioctl.h