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nshlib: df command no long uses the non-standard OS interface foreach_mountpoint(). No simply cats /proc/fs/blocks or /proc/fs/usage.

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This commit is contained in:
Gregory Nutt
2017-10-26 13:28:37 -06:00
parent 20076688c2
commit 3788928cbf
4 changed files with 26 additions and 126 deletions
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120
nshlib/nsh_mntcmds.c
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@@ -88,7 +88,6 @@
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT) && \
defined(CONFIG_FS_READABLE) && !defined(CONFIG_NSH_DISABLE_MOUNT)
#if !defined(CONFIG_BUILD_PROTECTED) && !defined(CONFIG_BUILD_KERNEL)
static const char* get_fstype(FAR struct statfs *statbuf)
{
FAR const char *fstype;
@@ -165,101 +164,6 @@ static const char* get_fstype(FAR struct statfs *statbuf)
return fstype;
}
#endif
#endif
/****************************************************************************
* Name: df_handler
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT) && \
defined(CONFIG_FS_READABLE) && !defined(CONFIG_NSH_DISABLE_DF)
static int df_handler(FAR const char *mountpoint,
FAR struct statfs *statbuf, FAR void *arg)
{
FAR struct nsh_vtbl_s *vtbl = (FAR struct nsh_vtbl_s *)arg;
DEBUGASSERT(mountpoint && statbuf && vtbl);
nsh_output(vtbl, "%6ld %8ld %8ld %8ld %s\n",
statbuf->f_bsize, statbuf->f_blocks,
statbuf->f_blocks - statbuf->f_bavail, statbuf->f_bavail,
mountpoint);
return OK;
}
/****************************************************************************
* Name: df_man_readable_handler
****************************************************************************/
#ifdef CONFIG_NSH_CMDOPT_DF_H
static int df_man_readable_handler(FAR const char *mountpoint,
FAR struct statfs *statbuf, FAR void *arg)
{
FAR struct nsh_vtbl_s *vtbl = (FAR struct nsh_vtbl_s *)arg;
uint32_t size;
uint32_t used;
uint32_t free;
int which;
char sizelabel;
char freelabel;
char usedlabel;
const char labels[5] = { 'B', 'K', 'M', 'G', 'T' };
DEBUGASSERT(mountpoint && statbuf && vtbl);
size = statbuf->f_bsize * statbuf->f_blocks;
free = statbuf->f_bsize * statbuf->f_bavail;
used = size - free;
/* Find the label for size */
which = 0;
while (size >= 9999 || ((size & 0x3ff) == 0 && size != 0))
{
which++;
size >>= 10;
}
sizelabel = labels[which];
/* Find the label for free */
which = 0;
while (free >= 9999 || ((free & 0x3ff) == 0 && free != 0))
{
which++;
free >>= 10;
}
freelabel = labels[which];
/* Find the label for used */
which = 0;
while (used >= 9999 || ((used & 0x3ff) == 0 && used != 0))
{
which++;
used >>= 10;
}
usedlabel = labels[which];
#if !defined(CONFIG_BUILD_PROTECTED) && !defined(CONFIG_BUILD_KERNEL)
nsh_output(vtbl, "%-10s %6ld%c %8ld%c %8ld%c %s\n", get_fstype(statbuf),
size, sizelabel, used, usedlabel, free, freelabel,
mountpoint);
#else
nsh_output(vtbl, "%6ld%c %8ld%c %8ld%c %s\n", size, sizelabel, used,
usedlabel, free, freelabel, mountpoint);
#endif
return OK;
}
#endif /* CONFIG_NSH_CMDOPT_DF_H */
#endif /* CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT) &&
defined(CONFIG_FS_READABLE) && !defined(CONFIG_NSH_DISABLE_DF) */
/****************************************************************************
* Public Functions
@@ -271,27 +175,30 @@ static int df_man_readable_handler(FAR const char *mountpoint,
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT) && \
defined(CONFIG_FS_READABLE) && !defined(CONFIG_NSH_DISABLE_DF)
#ifdef NSH_HAVE_CATFILE
int cmd_df(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
#ifdef CONFIG_NSH_CMDOPT_DF_H
if (argc > 1 && strcmp(argv[1], "-h") == 0)
{
#if !defined(CONFIG_BUILD_PROTECTED) && !defined(CONFIG_BUILD_KERNEL)
nsh_output(vtbl, "Filesystem Size Used Available Mounted on\n");
#ifndef CONFIG_FS_PROCFS_EXCLUDE_BLOCKS
return nsh_catfile(vtbl, argv[0],
CONFIG_NSH_PROC_MOUNTPOINT "/fs/usage");
#else
nsh_output(vtbl, "Size Used Available Mounted on\n");
return ERROR; /* REVISIT, some feedback would be good */
#endif
return foreach_mountpoint(df_man_readable_handler, (FAR void *)vtbl);
}
else
#endif
{
nsh_output(vtbl, " Block Number\n");
nsh_output(vtbl, " Size Blocks Used Available Mounted on\n");
return foreach_mountpoint(df_handler, (FAR void *)vtbl);
#ifndef CONFIG_FS_PROCFS_EXCLUDE_USAGE
return nsh_catfile(vtbl, argv[0],
CONFIG_NSH_PROC_MOUNTPOINT "/fs/blocks");
#else
return ERROR; /* REVISIT, some feedback would be good */
#endif
}
}
#endif
#endif
/****************************************************************************
* Name: cmd_mount
@@ -313,7 +220,7 @@ int cmd_mount(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
/* The mount command behaves differently if no parameters are provided. */
#ifdef NSH_HAVE_CATFILE
#if defined(NSH_HAVE_CATFILE) && !defined(CONFIG_FS_PROCFS_EXCLUDE_MOUNT)
if (argc < 2)
{
return nsh_catfile(vtbl, argv[0],
@@ -570,6 +477,7 @@ int cmd_umount(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "umount", NSH_ERRNO);
}
nsh_freefullpath(fullpath);
}