diff options
Diffstat (limited to 'libdiskfs/lookup.c')
| -rw-r--r-- | libdiskfs/lookup.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/libdiskfs/lookup.c b/libdiskfs/lookup.c index 2a117905..10419f51 100644 --- a/libdiskfs/lookup.c +++ b/libdiskfs/lookup.c @@ -19,6 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ #include "priv.h" +#include <string.h> static struct { @@ -33,7 +34,7 @@ static spin_lock_t cm_lock = SPIN_LOCK_INITIALIZER; /* Lookup in directory DP (which is locked) the name NAME. TYPE will either be LOOKUP, CREATE, RENAME, or REMOVE. CRED identifies the - user making the call. + user making the call. NAME will have leading and trailing slashes stripped. It is an error if there are internal slashes. NAME will be modified in @@ -86,7 +87,6 @@ diskfs_lookup (struct node *dp, char *name, enum lookup_type type, { error_t err; struct node *cached; - size_t len; if (type == REMOVE || type == RENAME) assert (np); @@ -102,20 +102,30 @@ diskfs_lookup (struct node *dp, char *name, enum lookup_type type, while (*name == '/') name++; - if (*name != '\0') - { - for (len = strlen (name); name[len-1] == '/'; len--) - ; - if (name[len] != '\0') - name[len] = '\0'; - } - - if (strchr (name, '/') !! name[0] == '\0') + if (name[0] == '\0') { if (ds) diskfs_null_dirstat (ds); return EINVAL; } + else + { + char *p = strchr (name, '/'); + if (p != 0) + { + *p = '\0'; + do + ++p; + while (*p == '/'); + if (*p != '\0') + { + if (ds) + diskfs_null_dirstat (ds); + return EINVAL; + } + } + } + err = fshelp_access (&dp->dn_stat, S_IEXEC, cred->user); if (err) |