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support for /proc/mcos%d/PID/maps (without file info) (LTP mlock03)

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This commit is contained in:
Balazs Gerofi bgerofi@riken.jp
2014-12-05 16:29:20 +09:00
parent 25f108bf78
commit 3c24315f91
1 changed files with 58 additions and 0 deletions
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58
kernel/procfs.c
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@ -66,6 +66,9 @@ void create_proc_procfs_files(int pid, int cpuid)
snprintf(fname, PROCFS_NAME_MAX, "mcos%d/%d/mem", osnum, pid);
create_proc_procfs_file(pid, fname, 0400, cpuid);
snprintf(fname, PROCFS_NAME_MAX, "mcos%d/%d/maps", osnum, pid);
create_proc_procfs_file(pid, fname, 0400, cpuid);
snprintf(fname, PROCFS_NAME_MAX, "mcos%d/%d/task/%d/mem", osnum, pid, pid);
create_proc_procfs_file(pid, fname, 0400, cpuid);
@ -116,6 +119,9 @@ void delete_proc_procfs_files(int pid)
snprintf(fname, PROCFS_NAME_MAX, "mcos%d/%d/mem", osnum, pid);
delete_proc_procfs_file(pid, fname);
snprintf(fname, PROCFS_NAME_MAX, "mcos%d/%d/maps", osnum, pid);
delete_proc_procfs_file(pid, fname);
snprintf(fname, PROCFS_NAME_MAX, "mcos%d/%d/auxv", osnum, pid);
delete_proc_procfs_file(pid, fname);
@ -313,6 +319,58 @@ void process_procfs_request(unsigned long rarg)
goto end;
}
/*
* mcos%d/PID/maps
*/
if (strcmp(p, "maps") == 0) {
struct vm_range *range;
struct process_vm *vm = proc->vm;
int left = r->count - 1; /* extra 1 for terminating NULL */
int written = 0;
char *_buf = buf;
ihk_mc_spinlock_lock_noirq(&vm->memory_range_lock);
list_for_each_entry(range, &vm->vm_range_list, list) {
int written_now;
/* format is (from man proc):
* address perms offset dev inode pathname
* 08048000-08056000 r-xp 00000000 03:0c 64593 /usr/sbin/gpm
*/
written_now = snprintf(_buf, left,
"%lx-%lx %s%s%s%s %lx %lx:%lx %d %s\n",
range->start, range->end,
range->flag & VR_PROT_READ ? "r" : "-",
range->flag & VR_PROT_WRITE ? "w" : "-",
range->flag & VR_PROT_EXEC ? "x" : "-",
range->flag & VR_PRIVATE ? "p" : "s",
/* TODO: fill in file details! */
0UL,
0UL,
0UL,
0,
""
);
left -= written_now;
_buf += written_now;
written += written_now;
if (left == 0) {
kprintf("%s(): WARNING: buffer too small to fill proc/maps\n",
__FUNCTION__);
break;
}
}
ihk_mc_spinlock_unlock_noirq(&vm->memory_range_lock);
ans = written + 1;
eof = 1;
goto end;
}
/*
* mcos%d/PID/auxv
*/