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fs/inode: add common function to get file count from list

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common function to get file count from file list

Signed-off-by: chao an <anchao@xiaomi.com>
This commit is contained in:
chao an
2023-11-12 21:04:07 +08:00
committed by Xiang Xiao
parent 0a567bbae4
commit 3b2c585ab7
3 changed files with 74 additions and 36 deletions
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fs/procfs/fs_procfsproc.c
+31 -31
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@@ -1188,17 +1188,24 @@ static ssize_t proc_groupfd(FAR struct proc_file_s *procfile,
size_t buflen, off_t offset)
{
FAR struct task_group_s *group = tcb->group;
FAR struct file *file;
FAR struct file *filep;
char path[PATH_MAX];
size_t remaining;
size_t linesize;
size_t copysize;
size_t totalsize;
int count;
int ret;
int i;
int j;
DEBUGASSERT(group != NULL);
count = files_countlist(&group->tg_filelist);
if (count == 0)
{
return 0;
}
remaining = buflen;
totalsize = 0;
@@ -1219,41 +1226,34 @@ static ssize_t proc_groupfd(FAR struct proc_file_s *procfile,
/* Examine each open file descriptor */
for (i = 0; i < group->tg_filelist.fl_rows; i++)
for (i = 0; i < count; i++)
{
for (j = 0, file = group->tg_filelist.fl_files[i];
j < CONFIG_NFILE_DESCRIPTORS_PER_BLOCK;
j++, file++)
ret = fs_getfilep(i, &filep);
if (ret != OK || filep == NULL)
{
/* Is there an inode associated with the file descriptor? */
continue;
}
if (file->f_inode == NULL)
{
continue;
}
if (file_ioctl(filep, FIOC_FILEPATH, path) < 0)
{
path[0] = '\0';
}
if (file_ioctl(file, FIOC_FILEPATH, path) < 0)
{
path[0] = '\0';
}
linesize = procfs_snprintf(procfile->line, STATUS_LINELEN,
"%-3d %-7d %-4x %-9ld %s\n",
i, filep->f_oflags,
INODE_GET_TYPE(filep->f_inode),
(long)filep->f_pos, path);
copysize = procfs_memcpy(procfile->line, linesize,
buffer, remaining, &offset);
linesize = procfs_snprintf(procfile->line, STATUS_LINELEN,
"%-3d %-7d %-4x %-9ld %s\n",
i * CONFIG_NFILE_DESCRIPTORS_PER_BLOCK
+ j, file->f_oflags,
INODE_GET_TYPE(file->f_inode),
(long)file->f_pos, path);
copysize = procfs_memcpy(procfile->line, linesize,
buffer, remaining, &offset);
totalsize += copysize;
buffer += copysize;
remaining -= copysize;
totalsize += copysize;
buffer += copysize;
remaining -= copysize;
if (totalsize >= buflen)
{
return totalsize;
}
if (totalsize >= buflen)
{
return totalsize;
}
}