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mount: support strictatime option. Closes 5240

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2012-06-26 16:09:00 +02:00
parent ea664dde87
commit 9ad8979ff1
1 changed files with 9 additions and 1 deletions
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10
util-linux/mount.c
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@ -113,6 +113,12 @@
#ifndef MS_RELATIME
# define MS_RELATIME (1 << 21)
#endif
#ifndef MS_STRICTATIME
# define MS_STRICTATIME (1 << 24)
#endif
/* Any ~MS_FOO value has this bit set: */
#define BB_MS_INVERTED_VALUE (1u << 31)
#include "libbb.h"
#if ENABLE_FEATURE_MOUNT_LABEL
@ -240,6 +246,7 @@ static const int32_t mount_options[] = {
/* "nomand" */ ~MS_MANDLOCK,
/* "relatime" */ MS_RELATIME,
/* "norelatime" */ ~MS_RELATIME,
/* "strictatime" */ MS_STRICTATIME,
/* "loud" */ ~MS_SILENT,
/* "rbind" */ MS_BIND|MS_RECURSIVE,
@ -297,6 +304,7 @@ static const char mount_option_str[] =
"nomand\0"
"relatime\0"
"norelatime\0"
"strictatime\0"
"loud\0"
"rbind\0"
@ -473,7 +481,7 @@ static unsigned long parse_mount_options(char *options, char **unrecognized)
&& (options[opt_len] == '\0' || options[opt_len] == '=')
) {
unsigned long fl = mount_options[i];
if ((long)fl < 0)
if (fl & BB_MS_INVERTED_VALUE)
flags &= fl;
else
flags |= fl;