#include <security/audit/audit.h>
-#if CONFIG_CSR
-#include <sys/codesign.h>
-#include <sys/csr.h>
-#endif
+#if CONFIG_MACF
+#include <security/mac_framework.h>
+#endif /* CONFIG_MACF */
typedef struct {
int flavor; /* the number for this flavor */
typedef struct {
vm_offset_t header;
- int hoffset;
+ size_t hoffset;
mythread_state_flavor_t *flavors;
- int tstate_size;
- int flavor_count;
+ size_t tstate_size;
+ size_t flavor_count;
} tir_t;
extern int freespace_mb(vnode_t vp);
collectth_state(thread_t th_act, void *tirp)
{
vm_offset_t header;
- int hoffset, i;
+ size_t hoffset, i;
mythread_state_flavor_t *flavors;
struct thread_command *tc;
tir_t *t = (tir_t *)tirp;
tc = (struct thread_command *) (header + hoffset);
tc->cmd = LC_THREAD;
- tc->cmdsize = sizeof(struct thread_command)
- + t->tstate_size;
+ tc->cmdsize = (uint32_t)(sizeof(struct thread_command)
+ + t->tstate_size);
hoffset += sizeof(struct thread_command);
/*
* Follow with a struct thread_state_flavor and
* coredump_flags Extra options (ignore rlimit, run fsync)
*
* Returns: 0 Success
- * EFAULT Failed
+ * !0 Failure errno
*
* IMPORTANT: This function can only be called on the current process, due
* to assumptions below; see variable declaration section for
kauth_cred_t cred = vfs_context_ucred(ctx);
int error = 0;
struct vnode_attr va;
- int thread_count, segment_count;
- int command_size, header_size, tstate_size;
- int hoffset;
+ size_t thread_count, segment_count;
+ size_t command_size, header_size, tstate_size;
+ size_t hoffset;
off_t foffset;
mach_vm_offset_t vmoffset;
vm_offset_t header;
int error1 = 0;
char stack_name[MAXCOMLEN + 6];
char *alloced_name = NULL;
- char *name;
+ char *name = NULL;
mythread_state_flavor_t flavors[MAX_TSTATE_FLAVORS];
vm_size_t mapsize;
- int i;
+ size_t i;
uint32_t nesting_depth = 0;
kern_return_t kret;
struct vm_region_submap_info_64 vbr;
((sugid_coredump == 0) && /* Not dumping SUID/SGID binaries */
((kauth_cred_getsvuid(cred) != kauth_cred_getruid(cred)) ||
(kauth_cred_getsvgid(cred) != kauth_cred_getrgid(cred))))) {
-#if CONFIG_AUDIT
- audit_proc_coredump(core_proc, NULL, EFAULT);
-#endif
- return EFAULT;
+ error = EFAULT;
+ goto out2;
}
-#if CONFIG_CSR
- /* If the process is restricted, CSR isn't configured to allow
- * restricted processes to be debugged, and CSR isn't configured in
- * AppleInternal mode, then don't dump core. */
- if (cs_restricted(core_proc) &&
- csr_check(CSR_ALLOW_TASK_FOR_PID) &&
- csr_check(CSR_ALLOW_APPLE_INTERNAL)) {
-#if CONFIG_AUDIT
- audit_proc_coredump(core_proc, NULL, EFAULT);
-#endif
- return EFAULT;
+#if CONFIG_MACF
+ error = mac_proc_check_dump_core(core_proc);
+ if (error != 0) {
+ goto out2;
}
#endif
mapsize = get_vmmap_size(map);
if (((coredump_flags & COREDUMP_IGNORE_ULIMIT) == 0) &&
- (mapsize >= core_proc->p_rlimit[RLIMIT_CORE].rlim_cur)) {
- return EFAULT;
+ (mapsize >= proc_limitgetcur(core_proc, RLIMIT_CORE, FALSE))) {
+ error = EFAULT;
+ goto out2;
}
(void) task_suspend_internal(task);
tstate_size += sizeof(mythread_state_flavor_t) +
(flavors[i].count * sizeof(int));
}
- command_size = segment_count * segment_command_sz +
- thread_count * sizeof(struct thread_command) +
- tstate_size * thread_count;
- header_size = command_size + mach_header_sz;
+ {
+ size_t lhs;
+ size_t rhs;
+
+ /* lhs = segment_count * segment_command_sz */
+ if (os_mul_overflow(segment_count, segment_command_sz, &lhs)) {
+ error = ENOMEM;
+ goto out;
+ }
+
+ /* rhs = (tstate_size + sizeof(struct thread_command)) * thread_count */
+ if (os_add_and_mul_overflow(tstate_size, sizeof(struct thread_command), thread_count, &rhs)) {
+ error = ENOMEM;
+ goto out;
+ }
+
+ /* command_size = lhs + rhs */
+ if (os_add_overflow(lhs, rhs, &command_size)) {
+ error = ENOMEM;
+ goto out;
+ }
+ }
+
+ if (os_add_overflow(command_size, mach_header_sz, &header_size)) {
+ error = ENOMEM;
+ goto out;
+ }
if (kmem_alloc(kernel_map, &header, (vm_size_t)header_size, VM_KERN_MEMORY_DIAG) != KERN_SUCCESS) {
error = ENOMEM;
mh64->cputype = process_cpu_type(core_proc);
mh64->cpusubtype = process_cpu_subtype(core_proc);
mh64->filetype = MH_CORE;
- mh64->ncmds = segment_count + thread_count;
- mh64->sizeofcmds = command_size;
+ mh64->ncmds = (uint32_t)(segment_count + thread_count);
+ mh64->sizeofcmds = (uint32_t)command_size;
mh64->reserved = 0; /* 8 byte alignment */
} else {
mh = (struct mach_header *)header;
mh->cputype = process_cpu_type(core_proc);
mh->cpusubtype = process_cpu_subtype(core_proc);
mh->filetype = MH_CORE;
- mh->ncmds = segment_count + thread_count;
- mh->sizeofcmds = command_size;
+ mh->ncmds = (uint32_t)(segment_count + thread_count);
+ mh->sizeofcmds = (uint32_t)command_size;
}
hoffset = mach_header_sz; /* offset into header */
sc->cmdsize = sizeof(struct segment_command);
/* segment name is zeroed by kmem_alloc */
sc->segname[0] = 0;
- sc->vmaddr = CAST_DOWN_EXPLICIT(vm_offset_t, vmoffset);
- sc->vmsize = CAST_DOWN_EXPLICIT(vm_size_t, vmsize);
+ sc->vmaddr = CAST_DOWN_EXPLICIT(uint32_t, vmoffset);
+ sc->vmsize = CAST_DOWN_EXPLICIT(uint32_t, vmsize);
sc->fileoff = CAST_DOWN_EXPLICIT(uint32_t, foffset); /* will never truncate */
sc->filesize = CAST_DOWN_EXPLICIT(uint32_t, vmsize); /* will never truncate */
sc->maxprot = maxprot;
* Write out the Mach header at the beginning of the
* file. OK to use a 32 bit write for this.
*/
- error = vn_rdwr(UIO_WRITE, vp, (caddr_t)header, header_size, (off_t)0,
+ error = vn_rdwr(UIO_WRITE, vp, (caddr_t)header, (int)MIN(header_size, INT_MAX), (off_t)0,
UIO_SYSSPACE, IO_NOCACHE | IO_NODELOCKED | IO_UNIT, cred, (int *) 0, core_proc);
kmem_free(kernel_map, header, header_size);
projects / apple / xnu.git / blobdiff