diff options
| -rw-r--r-- | fs/xfs/xfs_super.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index ab8839b..c407121 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -139,9 +139,9 @@ static const match_table_t tokens = { STATIC unsigned long -suffix_strtoul(char *s, char **endp, unsigned int base) +suffix_kstrtoint(char *s, unsigned int base, int *res) { - int last, shift_left_factor = 0; + int last, shift_left_factor = 0, _res; char *value = s; last = strlen(value) - 1; @@ -158,7 +158,10 @@ suffix_strtoul(char *s, char **endp, unsigned int base) value[last] = '\0'; } - return simple_strtoul((const char *)s, endp, base) << shift_left_factor; + if (kstrtoint(s, base, &_res)) + return -EINVAL; + *res = _res << shift_left_factor; + return 0; } /* @@ -174,7 +177,7 @@ xfs_parseargs( char *options) { struct super_block *sb = mp->m_super; - char *this_char, *value, *eov; + char *this_char, *value; int dsunit = 0; int dswidth = 0; int iosize = 0; @@ -230,14 +233,16 @@ xfs_parseargs( this_char); return EINVAL; } - mp->m_logbufs = simple_strtoul(value, &eov, 10); + if (kstrtoint(value, 10, &mp->m_logbufs)) + return EINVAL; } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { if (!value || !*value) { xfs_warn(mp, "%s option requires an argument", this_char); return EINVAL; } - mp->m_logbsize = suffix_strtoul(value, &eov, 10); + if (suffix_kstrtoint(value, 10, &mp->m_logbsize)) + return EINVAL; } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { if (!value || !*value) { xfs_warn(mp, "%s option requires an argument", @@ -266,7 +271,8 @@ xfs_parseargs( this_char); return EINVAL; } - iosize = simple_strtoul(value, &eov, 10); + if (kstrtoint(value, 10, &iosize)) + return EINVAL; iosizelog = ffs(iosize) - 1; } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { if (!value || !*value) { @@ -274,7 +280,8 @@ xfs_parseargs( this_char); return EINVAL; } - iosize = suffix_strtoul(value, &eov, 10); + if (suffix_kstrtoint(value, 10, &iosize)) + return EINVAL; iosizelog = ffs(iosize) - 1; } else if (!strcmp(this_char, MNTOPT_GRPID) || !strcmp(this_char, MNTOPT_BSDGROUPS)) { @@ -296,14 +303,16 @@ xfs_parseargs( this_char); return EINVAL; } - dsunit = simple_strtoul(value, &eov, 10); + if (kstrtoint(value, 10, &dsunit)) + return EINVAL; } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { if (!value || !*value) { xfs_warn(mp, "%s option requires an argument", this_char); return EINVAL; } - dswidth = simple_strtoul(value, &eov, 10); + if (kstrtoint(value, 10, &dswidth)) + return EINVAL; } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { mp->m_flags |= XFS_MOUNT_SMALL_INUMS; } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |