* Re: [linux-cifs-client] [PATCH] cifs: use standard token parser for mount options [not found] ` <1274356716-25765-1-git-send-email-scott.lovenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> @ 2010-06-26 17:05 ` Jeff Layton [not found] ` <20100626130538.6b828b40-9yPaYZwiELC+kQycOl6kW4xkIHaj4LzF@public.gmane.org> 0 siblings, 1 reply; 2+ messages in thread From: Jeff Layton @ 2010-06-26 17:05 UTC (permalink / raw) To: Scott Lovenberg; +Cc: linux-cifs-u79uwXL29TY76Z2rM5mHXA On Thu, 20 May 2010 07:58:36 -0400 Scott Lovenberg <scott.lovenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > cifs_mount now uses the standard token parser for mount options and security options. > Common cases and aliases are also folded together. > > Signed-off-by: Scott Lovenberg <scott.lovenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > --- > fs/cifs/connect.c | 503 +++++++++++++++++++++++++++++++++++++++------------- > 1 files changed, 377 insertions(+), 126 deletions(-) > > diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c > index 2208f06..ee78b65 100644 > --- a/fs/cifs/connect.c > +++ b/fs/cifs/connect.c > @@ -34,6 +34,7 @@ > #include <linux/pagevec.h> > #include <linux/freezer.h> > #include <linux/namei.h> > +#include <linux/parser.h> > #include <asm/uaccess.h> > #include <asm/processor.h> > #include <linux/inet.h> > @@ -52,11 +53,184 @@ > #define CIFS_PORT 445 > #define RFC1001_PORT 139 > > + > extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, > unsigned char *p24); > > extern mempool_t *cifs_req_poolp; > > +/* mount options */ > +enum { > + Opt_user_xattr, Opt_nouser_xattr, > + Opt_user, Opt_pass, > + Opt_ip, Opt_addr, > + Opt_sec, Opt_unc, > + Opt_target, Opt_path, > + Opt_domain, Opt_workgroup, > + Opt_prefixpath, Opt_iocharset, > + Opt_uid, Opt_forceuid, > + Opt_noforceuid, Opt_gid, > + Opt_forcegid, Opt_noforcegid, > + Opt_file_mode, Opt_dir_mode, > + Opt_port, Opt_rsize, > + Opt_wsize, Opt_sockopt, > + Opt_netbiosname, Opt_servername, > + Opt_credentials, Opt_version, > + Opt_guest, Opt_rw, > + Opt_ro, Opt_noblocksend, > + Opt_noautotune, Opt_suid, > + Opt_nosuid, Opt_exec, > + Opt_noexec, Opt_nodev, > + Opt_noauto, Opt_dev, > + Opt_hard, Opt_soft, > + Opt_perm, Opt_noperm, > + Opt_mapchars, Opt_nomapchars, > + Opt_sfu, Opt_nosfu, > + Opt_nodfs, Opt_posixpaths, > + Opt_noposixpaths, Opt_nounix, > + Opt_nolinux, Opt_nocase, > + Opt_ignorecase, Opt_brl, > + Opt_nobrl, Opt_nolock, > + Opt_forcemandatorylock, Opt_setuids, > + Opt_nosetuids, Opt_dynperm, > + Opt_nodynperm, Opt_nohard, > + Opt_nosoft, Opt_nointr, > + Opt_intr, Opt_nostrictsync, > + Opt_strictsync, Opt_serverino, > + Opt_noserverino, Opt_cifsacl, > + Opt_nocifsacl, Opt_acl, > + Opt_noacl, Opt_locallease, > + Opt_sign, Opt_seal, > + Opt_direct, Opt_forcedirectio, > + Opt_noac > +}; > + > +static const match_table_t cifs_mount_options = { > + { Opt_user_xattr, "user_xattr" }, > + { Opt_nouser_xattr, "nouser_xattr" }, > + { Opt_user, "user" }, > + { Opt_pass, "pass" }, > + { Opt_ip, "ip" }, > + { Opt_addr, "addr" }, > + { Opt_sec, "sec" }, > + { Opt_unc, "unc" }, > + { Opt_target, "target" }, > + { Opt_path, "path" }, > + { Opt_domain, "dom" }, > + { Opt_domain, "domain" }, > + { Opt_workgroup, "workg" }, > + { Opt_workgroup, "workgroup" }, > + { Opt_prefixpath, "prefixpath" }, > + { Opt_iocharset, "iocharset" }, > + { Opt_uid, "uid" }, > + { Opt_forceuid, "forceuid" }, > + { Opt_noforceuid, "noforceuid" }, > + { Opt_gid, "gid" }, > + { Opt_forcegid, "forcegid" }, > + { Opt_noforcegid, "noforcegid" }, > + { Opt_file_mode, "file_" }, > + { Opt_file_mode, "file_mode" }, > + { Opt_dir_mode, "dir_" }, > + { Opt_dir_mode, "dir_mode" }, > + { Opt_dir_mode, "dirm" }, > + { Opt_dir_mode, "dirmode" }, > + { Opt_port, "port" }, > + { Opt_rsize, "rsize" }, > + { Opt_wsize, "wsize" }, > + { Opt_sockopt, "socko" }, > + { Opt_sockopt, "sockopt" }, > + { Opt_netbiosname, "netb" }, > + { Opt_netbiosname, "netbiosname" }, > + { Opt_servername, "servern" }, > + { Opt_servername, "servername" }, > + { Opt_credentials, "cred" }, > + { Opt_credentials, "credentials" }, > + { Opt_version, "ver" }, > + { Opt_version, "version" }, > + { Opt_guest, "guest" }, > + { Opt_rw, "rw" }, > + { Opt_ro, "ro" }, > + { Opt_noblocksend, "noblocksend" }, > + { Opt_noautotune, "noautotune" }, > + { Opt_suid, "suid" }, > + { Opt_nosuid, "nosuid" }, > + { Opt_exec, "exec" }, > + { Opt_noexec, "noexec" }, > + { Opt_nodev, "nodev" }, > + { Opt_noauto, "noauto" }, > + { Opt_dev, "dev" }, > + { Opt_hard, "hard" }, > + { Opt_soft, "soft" }, > + { Opt_perm, "perm" }, > + { Opt_noperm, "noperm" }, > + { Opt_mapchars, "mapchars" }, > + { Opt_nomapchars, "nomapchars" }, > + { Opt_sfu, "sfu" }, > + { Opt_nosfu, "nosfu" }, > + { Opt_nodfs, "nodfs" }, > + { Opt_posixpaths, "posixpaths" }, > + { Opt_noposixpaths, "noposixpaths" }, > + { Opt_nounix, "nounix" }, > + { Opt_nolinux, "nolinux" }, > + { Opt_nocase, "nocase" }, > + { Opt_ignorecase, "ignorecase" }, > + { Opt_brl, "brl" }, > + { Opt_nobrl, "nobrl" }, > + { Opt_nolock, "nolock" }, > + { Opt_forcemandatorylock, "forcemand" }, > + { Opt_forcemandatorylock, "forcemandatorylock" }, > + { Opt_setuids, "setuids" }, > + { Opt_nosetuids, "nosetuids" }, > + { Opt_dynperm, "dynperm" }, > + { Opt_nodynperm, "nodynperm" }, > + { Opt_nohard, "nohard" }, > + { Opt_nosoft, "nosoft" }, > + { Opt_nointr, "nointr" }, > + { Opt_intr, "intr" }, > + { Opt_nostrictsync, "nostrictsync" }, > + { Opt_strictsync, "strictsync" }, > + { Opt_serverino, "serveri" }, > + { Opt_serverino, "serverino" }, > + { Opt_noserverino, "noserveri" }, > + { Opt_noserverino, "noserverino" }, > + { Opt_cifsacl, "cifsacl" }, > + { Opt_nocifsacl, "nocifsacl" }, > + { Opt_acl, "acl" }, > + { Opt_noacl, "noacl" }, > + { Opt_locallease, "locall" }, > + { Opt_locallease, "locallease" }, > + { Opt_sign, "sign" }, > + { Opt_seal, "seal" }, > + { Opt_direct, "direct" }, > + { Opt_forcedirectio, "forcedirectio" }, > + { Opt_noac, "noac" } > +}; > + > +/* mount security options */ > +enum { > + Opt_sec_krb5, Opt_sec_krb5i, > + Opt_sec_krb5p, Opt_sec_ntlmsspi, > + Opt_sec_ntlmssp, Opt_sec_ntlmv2i, > + Opt_sec_ntlmv2, Opt_sec_ntlmi, > + Opt_sec_ntlm, Opt_sec_nontlm, > + Opt_sec_lanman, Opt_sec_none > +}; > + > +static const match_table_t cifs_sec_options = { > + { Opt_sec_krb5, "krb5" }, > + { Opt_sec_krb5i, "krb5i" }, > + { Opt_sec_krb5p, "krb5p" }, > + { Opt_sec_ntlmsspi, "ntlmsspi" }, > + { Opt_sec_ntlmssp, "ntlmssp" }, > + { Opt_sec_ntlmv2i, "ntlmv2i" }, > + { Opt_sec_ntlmv2, "ntlmv2" }, > + { Opt_sec_ntlmi, "ntlmi" }, > + { Opt_sec_ntlm, "ntlm" }, > + { Opt_sec_nontlm, "nontlm" }, > + { Opt_sec_lanman, "lanman" }, > + { Opt_sec_none, "none" } > +}; > + > struct smb_vol { > char *username; > char *password; > @@ -809,6 +983,7 @@ cifs_parse_mount_options(char *options, const char *devname, > short int override_gid = -1; > bool uid_specified = false; > bool gid_specified = false; > + substring_t args[MAX_OPT_ARGS]; > > separator[0] = ','; > separator[1] = 0; > @@ -859,13 +1034,14 @@ cifs_parse_mount_options(char *options, const char *devname, > continue; > if ((value = strchr(data, '=')) != NULL) > *value++ = '\0'; > - > - /* Have to parse this before we parse for "user" */ > - if (strnicmp(data, "user_xattr", 10) == 0) { > + switch (match_token(data, cifs_mount_options, args)) { > + case Opt_user_xattr: > vol->no_xattr = 0; > - } else if (strnicmp(data, "nouser_xattr", 12) == 0) { > + break; > + case Opt_nouser_xattr: > vol->no_xattr = 1; > - } else if (strnicmp(data, "user", 4) == 0) { > + break; > + case Opt_user: > if (!value) { > printk(KERN_WARNING > "CIFS: invalid or missing username\n"); > @@ -880,7 +1056,8 @@ cifs_parse_mount_options(char *options, const char *devname, > printk(KERN_WARNING "CIFS: username too long\n"); > return 1; > } > - } else if (strnicmp(data, "pass", 4) == 0) { > + break; > + case Opt_pass: > if (!value) { > vol->password = NULL; > continue; > @@ -961,8 +1138,10 @@ cifs_parse_mount_options(char *options, const char *devname, > } > strcpy(vol->password, value); > } > - } else if (!strnicmp(data, "ip", 2) || > - !strnicmp(data, "addr", 4)) { > + break; > + /* ip || addr */ > + case Opt_ip: > + case Opt_addr: > if (!value || !*value) { > vol->UNCip = NULL; > } else if (strnlen(value, INET6_ADDRSTRLEN) < > @@ -973,54 +1152,70 @@ cifs_parse_mount_options(char *options, const char *devname, > "too long\n"); > return 1; > } > - } else if (strnicmp(data, "sec", 3) == 0) { > + break; > + case Opt_sec: > if (!value || !*value) { > cERROR(1, "no security value specified"); > continue; > - } else if (strnicmp(value, "krb5i", 5) == 0) { > + } > + switch (match_token(value, cifs_sec_options, args)) { > + case Opt_sec_krb5i: > vol->secFlg |= CIFSSEC_MAY_KRB5 | > CIFSSEC_MUST_SIGN; > - } else if (strnicmp(value, "krb5p", 5) == 0) { > + break; > + case Opt_sec_krb5p: > /* vol->secFlg |= CIFSSEC_MUST_SEAL | > CIFSSEC_MAY_KRB5; */ > cERROR(1, "Krb5 cifs privacy not supported"); > return 1; > - } else if (strnicmp(value, "krb5", 4) == 0) { > + case Opt_sec_krb5: > vol->secFlg |= CIFSSEC_MAY_KRB5; > + break; > #ifdef CONFIG_CIFS_EXPERIMENTAL > - } else if (strnicmp(value, "ntlmsspi", 8) == 0) { > + case Opt_sec_ntlmsspi: > vol->secFlg |= CIFSSEC_MAY_NTLMSSP | > CIFSSEC_MUST_SIGN; > - } else if (strnicmp(value, "ntlmssp", 7) == 0) { > + break; > + case Opt_sec_ntlmssp: > vol->secFlg |= CIFSSEC_MAY_NTLMSSP; > + break; > #endif > - } else if (strnicmp(value, "ntlmv2i", 7) == 0) { > + case Opt_sec_ntlmv2i: > vol->secFlg |= CIFSSEC_MAY_NTLMV2 | > CIFSSEC_MUST_SIGN; > - } else if (strnicmp(value, "ntlmv2", 6) == 0) { > + break; > + case Opt_sec_ntlmv2: > vol->secFlg |= CIFSSEC_MAY_NTLMV2; > - } else if (strnicmp(value, "ntlmi", 5) == 0) { > + break; > + case Opt_sec_ntlmi: > vol->secFlg |= CIFSSEC_MAY_NTLM | > CIFSSEC_MUST_SIGN; > - } else if (strnicmp(value, "ntlm", 4) == 0) { > + break; > + case Opt_sec_ntlm: > /* ntlm is default so can be turned off too */ > vol->secFlg |= CIFSSEC_MAY_NTLM; > - } else if (strnicmp(value, "nontlm", 6) == 0) { > + break; > + case Opt_sec_nontlm: > /* BB is there a better way to do this? */ > vol->secFlg |= CIFSSEC_MAY_NTLMV2; > + break; > #ifdef CONFIG_CIFS_WEAK_PW_HASH > - } else if (strnicmp(value, "lanman", 6) == 0) { > + case Opt_sec_lanman: > vol->secFlg |= CIFSSEC_MAY_LANMAN; > + break; > #endif > - } else if (strnicmp(value, "none", 4) == 0) { > + case Opt_sec_none: > vol->nullauth = 1; > - } else { > + break; > + default: > cERROR(1, "bad security option: %s", value); > return 1; > } > - } else if ((strnicmp(data, "unc", 3) == 0) > - || (strnicmp(data, "target", 6) == 0) > - || (strnicmp(data, "path", 4) == 0)) { > + break; > + /* unc || target || path */ > + case Opt_unc: > + case Opt_target: > + case Opt_path: > if (!value || !*value) { > printk(KERN_WARNING "CIFS: invalid path to " > "network resource\n"); > @@ -1044,8 +1239,10 @@ cifs_parse_mount_options(char *options, const char *devname, > printk(KERN_WARNING "CIFS: UNC name too long\n"); > return 1; > } > - } else if ((strnicmp(data, "domain", 3) == 0) > - || (strnicmp(data, "workgroup", 5) == 0)) { > + break; > + /* domain || workgroup */ > + case Opt_domain: > + case Opt_workgroup: > if (!value || !*value) { > printk(KERN_WARNING "CIFS: invalid domain name\n"); > return 1; /* needs_arg; */ > @@ -1060,7 +1257,8 @@ cifs_parse_mount_options(char *options, const char *devname, > "long\n"); > return 1; > } > - } else if (strnicmp(data, "prefixpath", 10) == 0) { > + break; > + case Opt_prefixpath: > if (!value || !*value) { > printk(KERN_WARNING > "CIFS: invalid path prefix\n"); > @@ -1082,7 +1280,8 @@ cifs_parse_mount_options(char *options, const char *devname, > printk(KERN_WARNING "CIFS: prefix too long\n"); > return 1; > } > - } else if (strnicmp(data, "iocharset", 9) == 0) { > + break; > + case Opt_iocharset: > if (!value || !*value) { > printk(KERN_WARNING "CIFS: invalid iocharset " > "specified\n"); > @@ -1099,58 +1298,72 @@ cifs_parse_mount_options(char *options, const char *devname, > "too long.\n"); > return 1; > } > - } else if (!strnicmp(data, "uid", 3) && value && *value) { > - vol->linux_uid = simple_strtoul(value, &value, 0); > - uid_specified = true; > - } else if (!strnicmp(data, "forceuid", 8)) { > + break; > + case Opt_uid: > + if (value && *value) { > + vol->linux_uid = > + simple_strtoul(value, &value, 0); > + uid_specified = true; > + } > + break; > + case Opt_forceuid: > override_uid = 1; > - } else if (!strnicmp(data, "noforceuid", 10)) { > + break; > + case Opt_noforceuid: > override_uid = 0; > - } else if (!strnicmp(data, "gid", 3) && value && *value) { > - vol->linux_gid = simple_strtoul(value, &value, 0); > - gid_specified = true; > - } else if (!strnicmp(data, "forcegid", 8)) { > - override_gid = 1; > - } else if (!strnicmp(data, "noforcegid", 10)) { > - override_gid = 0; > - } else if (strnicmp(data, "file_mode", 4) == 0) { > + break; > + case Opt_gid: > if (value && *value) { > - vol->file_mode = > + vol->linux_gid = > simple_strtoul(value, &value, 0); > + gid_specified = true; > } > - } else if (strnicmp(data, "dir_mode", 4) == 0) { > + break; > + case Opt_forcegid: > + override_gid = 1; > + break; > + case Opt_noforcegid: > + override_gid = 0; > + break; > + case Opt_file_mode: > if (value && *value) { > - vol->dir_mode = > + vol->file_mode = > simple_strtoul(value, &value, 0); > } > - } else if (strnicmp(data, "dirmode", 4) == 0) { > + break; > + case Opt_dir_mode: > if (value && *value) { > vol->dir_mode = > simple_strtoul(value, &value, 0); > } > - } else if (strnicmp(data, "port", 4) == 0) { > + break; > + case Opt_port: > if (value && *value) { > vol->port = > simple_strtoul(value, &value, 0); > } > - } else if (strnicmp(data, "rsize", 5) == 0) { > + break; > + case Opt_rsize: > if (value && *value) { > vol->rsize = > simple_strtoul(value, &value, 0); > } > - } else if (strnicmp(data, "wsize", 5) == 0) { > + break; > + case Opt_wsize: > if (value && *value) { > vol->wsize = > simple_strtoul(value, &value, 0); > } > - } else if (strnicmp(data, "sockopt", 5) == 0) { > + break; > + case Opt_sockopt: > if (!value || !*value) { > cERROR(1, "no socket option specified"); > continue; > } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) { > vol->sockopt_tcp_nodelay = 1; > } > - } else if (strnicmp(data, "netbiosname", 4) == 0) { > + break; > + case Opt_netbiosname: > if (!value || !*value || (*value == ' ')) { > cFYI(1, "invalid (empty) netbiosname"); > } else { > @@ -1173,7 +1386,8 @@ cifs_parse_mount_options(char *options, const char *devname, > printk(KERN_WARNING "CIFS: netbiosname" > " longer than 15 truncated.\n"); > } > - } else if (strnicmp(data, "servern", 7) == 0) { > + break; > + case Opt_servername: > /* servernetbiosname specified override *SMBSERVER */ > if (!value || !*value || (*value == ' ')) { > cFYI(1, "empty server netbiosname specified"); > @@ -1200,67 +1414,67 @@ cifs_parse_mount_options(char *options, const char *devname, > printk(KERN_WARNING "CIFS: server net" > "biosname longer than 15 truncated.\n"); > } > - } else if (strnicmp(data, "credentials", 4) == 0) { > - /* ignore */ > - } else if (strnicmp(data, "version", 3) == 0) { > - /* ignore */ > - } else if (strnicmp(data, "guest", 5) == 0) { > - /* ignore */ > - } else if (strnicmp(data, "rw", 2) == 0) { > - /* ignore */ > - } else if (strnicmp(data, "ro", 2) == 0) { > - /* ignore */ > - } else if (strnicmp(data, "noblocksend", 11) == 0) { > + break; > + case Opt_noblocksend: > vol->noblocksnd = 1; > - } else if (strnicmp(data, "noautotune", 10) == 0) { > + break; > + case Opt_noautotune: > vol->noautotune = 1; > - } else if ((strnicmp(data, "suid", 4) == 0) || > - (strnicmp(data, "nosuid", 6) == 0) || > - (strnicmp(data, "exec", 4) == 0) || > - (strnicmp(data, "noexec", 6) == 0) || > - (strnicmp(data, "nodev", 5) == 0) || > - (strnicmp(data, "noauto", 6) == 0) || > - (strnicmp(data, "dev", 3) == 0)) { > - /* The mount tool or mount.cifs helper (if present) > - uses these opts to set flags, and the flags are read > - by the kernel vfs layer before we get here (ie > - before read super) so there is no point trying to > - parse these options again and set anything and it > - is ok to just ignore them */ > - continue; > - } else if (strnicmp(data, "hard", 4) == 0) { > + break; > + /* hard || nosoft */ > + case Opt_hard: > + case Opt_nosoft: > vol->retry = 1; > - } else if (strnicmp(data, "soft", 4) == 0) { > + break; > + /* soft || nohard */ > + case Opt_soft: > + case Opt_nohard: > vol->retry = 0; > - } else if (strnicmp(data, "perm", 4) == 0) { > + break; > + case Opt_perm: > vol->noperm = 0; > - } else if (strnicmp(data, "noperm", 6) == 0) { > + break; > + case Opt_noperm: > vol->noperm = 1; > - } else if (strnicmp(data, "mapchars", 8) == 0) { > + break; > + case Opt_mapchars: > vol->remap = 1; > - } else if (strnicmp(data, "nomapchars", 10) == 0) { > + break; > + case Opt_nomapchars: > vol->remap = 0; > - } else if (strnicmp(data, "sfu", 3) == 0) { > + break; > + case Opt_sfu: > vol->sfu_emul = 1; > - } else if (strnicmp(data, "nosfu", 5) == 0) { > + break; > + case Opt_nosfu: > vol->sfu_emul = 0; > - } else if (strnicmp(data, "nodfs", 5) == 0) { > + break; > + case Opt_nodfs: > vol->nodfs = 1; > - } else if (strnicmp(data, "posixpaths", 10) == 0) { > + break; > + case Opt_posixpaths: > vol->posix_paths = 1; > - } else if (strnicmp(data, "noposixpaths", 12) == 0) { > + break; > + case Opt_noposixpaths: > vol->posix_paths = 0; > - } else if (strnicmp(data, "nounix", 6) == 0) { > + break; > + case Opt_nounix: > vol->no_linux_ext = 1; > - } else if (strnicmp(data, "nolinux", 7) == 0) { > + break; > + case Opt_nolinux: > vol->no_linux_ext = 1; > - } else if ((strnicmp(data, "nocase", 6) == 0) || > - (strnicmp(data, "ignorecase", 10) == 0)) { > + break; > + /* nocase || ignorecase */ > + case Opt_nocase: > + case Opt_ignorecase: > vol->nocase = 1; > - } else if (strnicmp(data, "brl", 3) == 0) { > + break; > + case Opt_brl: > vol->nobrl = 0; > - } else if ((strnicmp(data, "nobrl", 5) == 0) || > - (strnicmp(data, "nolock", 6) == 0)) { > + break; > + /* nobrl || nolock */ > + case Opt_nobrl: > + case Opt_nolock: > vol->nobrl = 1; > /* turn off mandatory locking in mode > if remote locking is turned off since the > @@ -1268,8 +1482,8 @@ cifs_parse_mount_options(char *options, const char *devname, > if (vol->file_mode == > (S_IALLUGO & ~(S_ISUID | S_IXGRP))) > vol->file_mode = S_IALLUGO; > - } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { > - /* will take the shorter form "forcemand" as well */ > + break; > + case Opt_forcemandatorylock: > /* This mount option will force use of mandatory > (DOS/Windows style) byte range locks, instead of > using posix advisory byte range locks, even if the > @@ -1279,61 +1493,98 @@ cifs_parse_mount_options(char *options, const char *devname, > would be used (mandatory locks is all that those > those servers support) */ > vol->mand_lock = 1; > - } else if (strnicmp(data, "setuids", 7) == 0) { > + break; > + case Opt_setuids: > vol->setuids = 1; > - } else if (strnicmp(data, "nosetuids", 9) == 0) { > + break; > + case Opt_nosetuids: > vol->setuids = 0; > - } else if (strnicmp(data, "dynperm", 7) == 0) { > + break; > + case Opt_dynperm: > vol->dynperm = true; > - } else if (strnicmp(data, "nodynperm", 9) == 0) { > + break; > + case Opt_nodynperm: > vol->dynperm = false; > - } else if (strnicmp(data, "nohard", 6) == 0) { > - vol->retry = 0; > - } else if (strnicmp(data, "nosoft", 6) == 0) { > - vol->retry = 1; > - } else if (strnicmp(data, "nointr", 6) == 0) { > - vol->intr = 0; > - } else if (strnicmp(data, "intr", 4) == 0) { > + break; > + case Opt_intr: > vol->intr = 1; > - } else if (strnicmp(data, "nostrictsync", 12) == 0) { > - vol->nostrictsync = 1; > - } else if (strnicmp(data, "strictsync", 10) == 0) { > + break; > + case Opt_nointr: > + vol->intr = 0; > + break; > + case Opt_strictsync: > vol->nostrictsync = 0; > - } else if (strnicmp(data, "serverino", 7) == 0) { > + break; > + case Opt_nostrictsync: > + vol->nostrictsync = 1; > + break; > + case Opt_serverino: > vol->server_ino = 1; > - } else if (strnicmp(data, "noserverino", 9) == 0) { > + break; > + case Opt_noserverino: > vol->server_ino = 0; > - } else if (strnicmp(data, "cifsacl", 7) == 0) { > + break; > + case Opt_cifsacl: > vol->cifs_acl = 1; > - } else if (strnicmp(data, "nocifsacl", 9) == 0) { > + break; > + case Opt_nocifsacl: > vol->cifs_acl = 0; > - } else if (strnicmp(data, "acl", 3) == 0) { > + break; > + case Opt_acl: > vol->no_psx_acl = 0; > - } else if (strnicmp(data, "noacl", 5) == 0) { > + break; > + case Opt_noacl: > vol->no_psx_acl = 1; > + break; > #ifdef CONFIG_CIFS_EXPERIMENTAL > - } else if (strnicmp(data, "locallease", 6) == 0) { > + case Opt_locallease: > vol->local_lease = 1; > + break; > #endif > - } else if (strnicmp(data, "sign", 4) == 0) { > + case Opt_sign: > vol->secFlg |= CIFSSEC_MUST_SIGN; > - } else if (strnicmp(data, "seal", 4) == 0) { > + break; > + case Opt_seal: > /* we do not do the following in secFlags because seal > is a per tree connection (mount) not a per socket > or per-smb connection option in the protocol */ > /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ > vol->seal = 1; > - } else if (strnicmp(data, "direct", 6) == 0) { > - vol->direct_io = 1; > - } else if (strnicmp(data, "forcedirectio", 13) == 0) { > + break; > + /* direct || forcedirectio */ > + case Opt_direct: > + case Opt_forcedirectio: > vol->direct_io = 1; > - } else if (strnicmp(data, "noac", 4) == 0) { > + break; > + case Opt_noac: > printk(KERN_WARNING "CIFS: Mount option noac not " > "supported. Instead set " > "/proc/fs/cifs/LookupCacheEnabled to 0\n"); > - } else > + break; > + /* Ignore these */ > + case Opt_credentials: > + case Opt_version: > + case Opt_guest: > + case Opt_ro: > + case Opt_rw: > + /* The mount tool or mount.cifs helper (if present) uses these > + opts to set flags, and the flags are read by the kernel vfs > + layer before we get here (ie before read super) so there is > + no point trying to parse these options again and set > + anything and it is ok to just ignore them */ > + case Opt_suid: > + case Opt_nosuid: > + case Opt_exec: > + case Opt_noexec: > + case Opt_dev: > + case Opt_nodev: > + case Opt_noauto: > + break; > + default: > printk(KERN_WARNING "CIFS: Unknown mount option %s\n", > data); > + break; > + } > } > if (vol->UNC == NULL) { > if (devname == NULL) { Finally got around to trying this out and I get the following oops when mounting a share with these options: sec=krb5i,multises,noauto general protection fault: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/bdi/cifs-1/uevent CPU 0 Modules linked in: cifs nfsd lockd nfs_acl exportfs rpcsec_gss_krb5 auth_rpcgss des_generic sunrpc ipv6 microcode i2c_piix4 i2c_core virtio_net joydev virtio_balloon virtio_blk virtio_pci virtio_ring virtio [last unloaded: mperf] Pid: 1542, comm: mount.cifs Not tainted 2.6.35-0.2.rc3.git0.fc14.x86_64 #1 / RIP: 0010:[<ffffffff8123728c>] [<ffffffff8123728c>] strchr+0x14/0x1d RSP: 0018:ffff880039a65bd8 EFLAGS: 00010246 RAX: 7365735f626d735f RBX: 0000000000000000 RCX: ffff88003cb4d041 RDX: ffff880039a65c6d RSI: 0000000000000025 RDI: 7365735f626d735f RBP: ffff880039a65bd8 R08: 000000000000002c R09: 000000000000002c R10: 00000000000080d0 R11: ffffffff8113bc6c R12: ffff88003cb4d041 R13: ffffffffa0219d40 R14: 0000000000000000 R15: 7365735f626d735f FS: 00007f1fbcba6720(0000) GS:ffff880004600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000001a31818 CR3: 000000003a287000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process mount.cifs (pid: 1542, threadinfo ffff880039a64000, task ffff880039adc8a0) Stack: ffff880039a65c48 ffffffff8123b1ee ffff88003a18b990 ffff880039a65cd8 <0> ffff88003cb4d041 ffffffff8111cd42 ffffffffa0202f86 7365735f626d735f <0> ffff88003997de30 ffff88003997de30 ffff88003cc94840 00000000ffffffff Call Trace: [<ffffffff8123b1ee>] match_token+0x4b/0x1a8 [<ffffffff8111cd42>] ? __kmalloc+0x17c/0x18e [<ffffffffa0202f86>] ? cifs_mount+0x639/0x1737 [cifs] [<ffffffffa0202c11>] cifs_mount+0x2c4/0x1737 [cifs] [<ffffffffa01f5aa4>] ? cifs_get_sb+0x110/0x2e4 [cifs] [<ffffffffa01f5b00>] cifs_get_sb+0x16c/0x2e4 [cifs] [<ffffffff8112c946>] vfs_kern_mount+0xbd/0x19b [<ffffffff8112ca8c>] do_kern_mount+0x4d/0xed [<ffffffff8114368a>] do_mount+0x776/0x7ed [<ffffffff811128aa>] ? alloc_pages_current+0xa7/0xca [<ffffffff81143789>] sys_mount+0x88/0xc2 [<ffffffff81009c32>] system_call_fastpath+0x16/0x1b Code: 14 84 c0 74 0e 48 ff c7 48 ff c6 48 ff ca 48 85 d2 75 e1 31 c0 c9 c3 55 48 89 f8 48 89 e5 eb 0b 84 d2 75 04 31 c0 eb 0a 48 ff c0 <8a> 10 40 38 f2 75 ee c9 c3 55 48 89 f8 48 89 e5 eb 03 48 ff c0 RIP [<ffffffff8123728c>] strchr+0x14/0x1d RSP <ffff880039a65bd8> ---[ end trace 50d173d44b64b1d9 ]--- It's crashing in this match_token() call: gdb) list *(cifs_mount+0x2c4) 0xdcf7 is in cifs_mount (fs/cifs/connect.c:1094). 1089 while ((data = strsep(&options, separator)) != NULL) { 1090 if (!*data) 1091 continue; 1092 if ((value = strchr(data, '=')) != NULL) 1093 *value++ = '\0'; 1094 switch (match_token(data, cifs_mount_options, args)) { 1095 case Opt_user_xattr: 1096 vol->no_xattr = 0; 1097 break; 1098 case Opt_nouser_xattr: (gdb) quit -- Jeff Layton <jlayton-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org> ^ permalink raw reply [flat|nested] 2+ messages in thread
[parent not found: <20100626130538.6b828b40-9yPaYZwiELC+kQycOl6kW4xkIHaj4LzF@public.gmane.org>]
* Re: [linux-cifs-client] [PATCH] cifs: use standard token parser for mount options [not found] ` <20100626130538.6b828b40-9yPaYZwiELC+kQycOl6kW4xkIHaj4LzF@public.gmane.org> @ 2010-06-28 17:00 ` Scott Lovenberg 0 siblings, 0 replies; 2+ messages in thread From: Scott Lovenberg @ 2010-06-28 17:00 UTC (permalink / raw) To: Jeff Layton; +Cc: linux-cifs-u79uwXL29TY76Z2rM5mHXA On 6/26/2010 1:05 PM, Jeff Layton wrote: > On Thu, 20 May 2010 07:58:36 -0400 > Scott Lovenberg<scott.lovenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > >> cifs_mount now uses the standard token parser for mount options and security options. >> Common cases and aliases are also folded together. >> >> Signed-off-by: Scott Lovenberg<scott.lovenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> >> --- >> fs/cifs/connect.c | 503 +++++++++++++++++++++++++++++++++++++++------------- >> 1 files changed, 377 insertions(+), 126 deletions(-) >> >> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c >> index 2208f06..ee78b65 100644 >> --- a/fs/cifs/connect.c >> +++ b/fs/cifs/connect.c >> @@ -34,6 +34,7 @@ >> #include<linux/pagevec.h> >> #include<linux/freezer.h> >> #include<linux/namei.h> >> +#include<linux/parser.h> >> #include<asm/uaccess.h> >> #include<asm/processor.h> >> #include<linux/inet.h> >> @@ -52,11 +53,184 @@ >> #define CIFS_PORT 445 >> #define RFC1001_PORT 139 >> >> + >> extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, >> unsigned char *p24); >> >> extern mempool_t *cifs_req_poolp; >> >> +/* mount options */ >> +enum { >> + Opt_user_xattr, Opt_nouser_xattr, >> + Opt_user, Opt_pass, >> + Opt_ip, Opt_addr, >> + Opt_sec, Opt_unc, >> + Opt_target, Opt_path, >> + Opt_domain, Opt_workgroup, >> + Opt_prefixpath, Opt_iocharset, >> + Opt_uid, Opt_forceuid, >> + Opt_noforceuid, Opt_gid, >> + Opt_forcegid, Opt_noforcegid, >> + Opt_file_mode, Opt_dir_mode, >> + Opt_port, Opt_rsize, >> + Opt_wsize, Opt_sockopt, >> + Opt_netbiosname, Opt_servername, >> + Opt_credentials, Opt_version, >> + Opt_guest, Opt_rw, >> + Opt_ro, Opt_noblocksend, >> + Opt_noautotune, Opt_suid, >> + Opt_nosuid, Opt_exec, >> + Opt_noexec, Opt_nodev, >> + Opt_noauto, Opt_dev, >> + Opt_hard, Opt_soft, >> + Opt_perm, Opt_noperm, >> + Opt_mapchars, Opt_nomapchars, >> + Opt_sfu, Opt_nosfu, >> + Opt_nodfs, Opt_posixpaths, >> + Opt_noposixpaths, Opt_nounix, >> + Opt_nolinux, Opt_nocase, >> + Opt_ignorecase, Opt_brl, >> + Opt_nobrl, Opt_nolock, >> + Opt_forcemandatorylock, Opt_setuids, >> + Opt_nosetuids, Opt_dynperm, >> + Opt_nodynperm, Opt_nohard, >> + Opt_nosoft, Opt_nointr, >> + Opt_intr, Opt_nostrictsync, >> + Opt_strictsync, Opt_serverino, >> + Opt_noserverino, Opt_cifsacl, >> + Opt_nocifsacl, Opt_acl, >> + Opt_noacl, Opt_locallease, >> + Opt_sign, Opt_seal, >> + Opt_direct, Opt_forcedirectio, >> + Opt_noac >> +}; >> + >> +static const match_table_t cifs_mount_options = { >> + { Opt_user_xattr, "user_xattr" }, >> + { Opt_nouser_xattr, "nouser_xattr" }, >> + { Opt_user, "user" }, >> + { Opt_pass, "pass" }, >> + { Opt_ip, "ip" }, >> + { Opt_addr, "addr" }, >> + { Opt_sec, "sec" }, >> + { Opt_unc, "unc" }, >> + { Opt_target, "target" }, >> + { Opt_path, "path" }, >> + { Opt_domain, "dom" }, >> + { Opt_domain, "domain" }, >> + { Opt_workgroup, "workg" }, >> + { Opt_workgroup, "workgroup" }, >> + { Opt_prefixpath, "prefixpath" }, >> + { Opt_iocharset, "iocharset" }, >> + { Opt_uid, "uid" }, >> + { Opt_forceuid, "forceuid" }, >> + { Opt_noforceuid, "noforceuid" }, >> + { Opt_gid, "gid" }, >> + { Opt_forcegid, "forcegid" }, >> + { Opt_noforcegid, "noforcegid" }, >> + { Opt_file_mode, "file_" }, >> + { Opt_file_mode, "file_mode" }, >> + { Opt_dir_mode, "dir_" }, >> + { Opt_dir_mode, "dir_mode" }, >> + { Opt_dir_mode, "dirm" }, >> + { Opt_dir_mode, "dirmode" }, >> + { Opt_port, "port" }, >> + { Opt_rsize, "rsize" }, >> + { Opt_wsize, "wsize" }, >> + { Opt_sockopt, "socko" }, >> + { Opt_sockopt, "sockopt" }, >> + { Opt_netbiosname, "netb" }, >> + { Opt_netbiosname, "netbiosname" }, >> + { Opt_servername, "servern" }, >> + { Opt_servername, "servername" }, >> + { Opt_credentials, "cred" }, >> + { Opt_credentials, "credentials" }, >> + { Opt_version, "ver" }, >> + { Opt_version, "version" }, >> + { Opt_guest, "guest" }, >> + { Opt_rw, "rw" }, >> + { Opt_ro, "ro" }, >> + { Opt_noblocksend, "noblocksend" }, >> + { Opt_noautotune, "noautotune" }, >> + { Opt_suid, "suid" }, >> + { Opt_nosuid, "nosuid" }, >> + { Opt_exec, "exec" }, >> + { Opt_noexec, "noexec" }, >> + { Opt_nodev, "nodev" }, >> + { Opt_noauto, "noauto" }, >> + { Opt_dev, "dev" }, >> + { Opt_hard, "hard" }, >> + { Opt_soft, "soft" }, >> + { Opt_perm, "perm" }, >> + { Opt_noperm, "noperm" }, >> + { Opt_mapchars, "mapchars" }, >> + { Opt_nomapchars, "nomapchars" }, >> + { Opt_sfu, "sfu" }, >> + { Opt_nosfu, "nosfu" }, >> + { Opt_nodfs, "nodfs" }, >> + { Opt_posixpaths, "posixpaths" }, >> + { Opt_noposixpaths, "noposixpaths" }, >> + { Opt_nounix, "nounix" }, >> + { Opt_nolinux, "nolinux" }, >> + { Opt_nocase, "nocase" }, >> + { Opt_ignorecase, "ignorecase" }, >> + { Opt_brl, "brl" }, >> + { Opt_nobrl, "nobrl" }, >> + { Opt_nolock, "nolock" }, >> + { Opt_forcemandatorylock, "forcemand" }, >> + { Opt_forcemandatorylock, "forcemandatorylock" }, >> + { Opt_setuids, "setuids" }, >> + { Opt_nosetuids, "nosetuids" }, >> + { Opt_dynperm, "dynperm" }, >> + { Opt_nodynperm, "nodynperm" }, >> + { Opt_nohard, "nohard" }, >> + { Opt_nosoft, "nosoft" }, >> + { Opt_nointr, "nointr" }, >> + { Opt_intr, "intr" }, >> + { Opt_nostrictsync, "nostrictsync" }, >> + { Opt_strictsync, "strictsync" }, >> + { Opt_serverino, "serveri" }, >> + { Opt_serverino, "serverino" }, >> + { Opt_noserverino, "noserveri" }, >> + { Opt_noserverino, "noserverino" }, >> + { Opt_cifsacl, "cifsacl" }, >> + { Opt_nocifsacl, "nocifsacl" }, >> + { Opt_acl, "acl" }, >> + { Opt_noacl, "noacl" }, >> + { Opt_locallease, "locall" }, >> + { Opt_locallease, "locallease" }, >> + { Opt_sign, "sign" }, >> + { Opt_seal, "seal" }, >> + { Opt_direct, "direct" }, >> + { Opt_forcedirectio, "forcedirectio" }, >> + { Opt_noac, "noac" } >> +}; >> + >> +/* mount security options */ >> +enum { >> + Opt_sec_krb5, Opt_sec_krb5i, >> + Opt_sec_krb5p, Opt_sec_ntlmsspi, >> + Opt_sec_ntlmssp, Opt_sec_ntlmv2i, >> + Opt_sec_ntlmv2, Opt_sec_ntlmi, >> + Opt_sec_ntlm, Opt_sec_nontlm, >> + Opt_sec_lanman, Opt_sec_none >> +}; >> + >> +static const match_table_t cifs_sec_options = { >> + { Opt_sec_krb5, "krb5" }, >> + { Opt_sec_krb5i, "krb5i" }, >> + { Opt_sec_krb5p, "krb5p" }, >> + { Opt_sec_ntlmsspi, "ntlmsspi" }, >> + { Opt_sec_ntlmssp, "ntlmssp" }, >> + { Opt_sec_ntlmv2i, "ntlmv2i" }, >> + { Opt_sec_ntlmv2, "ntlmv2" }, >> + { Opt_sec_ntlmi, "ntlmi" }, >> + { Opt_sec_ntlm, "ntlm" }, >> + { Opt_sec_nontlm, "nontlm" }, >> + { Opt_sec_lanman, "lanman" }, >> + { Opt_sec_none, "none" } >> +}; >> + >> struct smb_vol { >> char *username; >> char *password; >> @@ -809,6 +983,7 @@ cifs_parse_mount_options(char *options, const char *devname, >> short int override_gid = -1; >> bool uid_specified = false; >> bool gid_specified = false; >> + substring_t args[MAX_OPT_ARGS]; >> >> separator[0] = ','; >> separator[1] = 0; >> @@ -859,13 +1034,14 @@ cifs_parse_mount_options(char *options, const char *devname, >> continue; >> if ((value = strchr(data, '=')) != NULL) >> *value++ = '\0'; >> - >> - /* Have to parse this before we parse for "user" */ >> - if (strnicmp(data, "user_xattr", 10) == 0) { >> + switch (match_token(data, cifs_mount_options, args)) { >> + case Opt_user_xattr: >> vol->no_xattr = 0; >> - } else if (strnicmp(data, "nouser_xattr", 12) == 0) { >> + break; >> + case Opt_nouser_xattr: >> vol->no_xattr = 1; >> - } else if (strnicmp(data, "user", 4) == 0) { >> + break; >> + case Opt_user: >> if (!value) { >> printk(KERN_WARNING >> "CIFS: invalid or missing username\n"); >> @@ -880,7 +1056,8 @@ cifs_parse_mount_options(char *options, const char *devname, >> printk(KERN_WARNING "CIFS: username too long\n"); >> return 1; >> } >> - } else if (strnicmp(data, "pass", 4) == 0) { >> + break; >> + case Opt_pass: >> if (!value) { >> vol->password = NULL; >> continue; >> @@ -961,8 +1138,10 @@ cifs_parse_mount_options(char *options, const char *devname, >> } >> strcpy(vol->password, value); >> } >> - } else if (!strnicmp(data, "ip", 2) || >> - !strnicmp(data, "addr", 4)) { >> + break; >> + /* ip || addr */ >> + case Opt_ip: >> + case Opt_addr: >> if (!value || !*value) { >> vol->UNCip = NULL; >> } else if (strnlen(value, INET6_ADDRSTRLEN)< >> @@ -973,54 +1152,70 @@ cifs_parse_mount_options(char *options, const char *devname, >> "too long\n"); >> return 1; >> } >> - } else if (strnicmp(data, "sec", 3) == 0) { >> + break; >> + case Opt_sec: >> if (!value || !*value) { >> cERROR(1, "no security value specified"); >> continue; >> - } else if (strnicmp(value, "krb5i", 5) == 0) { >> + } >> + switch (match_token(value, cifs_sec_options, args)) { >> + case Opt_sec_krb5i: >> vol->secFlg |= CIFSSEC_MAY_KRB5 | >> CIFSSEC_MUST_SIGN; >> - } else if (strnicmp(value, "krb5p", 5) == 0) { >> + break; >> + case Opt_sec_krb5p: >> /* vol->secFlg |= CIFSSEC_MUST_SEAL | >> CIFSSEC_MAY_KRB5; */ >> cERROR(1, "Krb5 cifs privacy not supported"); >> return 1; >> - } else if (strnicmp(value, "krb5", 4) == 0) { >> + case Opt_sec_krb5: >> vol->secFlg |= CIFSSEC_MAY_KRB5; >> + break; >> #ifdef CONFIG_CIFS_EXPERIMENTAL >> - } else if (strnicmp(value, "ntlmsspi", 8) == 0) { >> + case Opt_sec_ntlmsspi: >> vol->secFlg |= CIFSSEC_MAY_NTLMSSP | >> CIFSSEC_MUST_SIGN; >> - } else if (strnicmp(value, "ntlmssp", 7) == 0) { >> + break; >> + case Opt_sec_ntlmssp: >> vol->secFlg |= CIFSSEC_MAY_NTLMSSP; >> + break; >> #endif >> - } else if (strnicmp(value, "ntlmv2i", 7) == 0) { >> + case Opt_sec_ntlmv2i: >> vol->secFlg |= CIFSSEC_MAY_NTLMV2 | >> CIFSSEC_MUST_SIGN; >> - } else if (strnicmp(value, "ntlmv2", 6) == 0) { >> + break; >> + case Opt_sec_ntlmv2: >> vol->secFlg |= CIFSSEC_MAY_NTLMV2; >> - } else if (strnicmp(value, "ntlmi", 5) == 0) { >> + break; >> + case Opt_sec_ntlmi: >> vol->secFlg |= CIFSSEC_MAY_NTLM | >> CIFSSEC_MUST_SIGN; >> - } else if (strnicmp(value, "ntlm", 4) == 0) { >> + break; >> + case Opt_sec_ntlm: >> /* ntlm is default so can be turned off too */ >> vol->secFlg |= CIFSSEC_MAY_NTLM; >> - } else if (strnicmp(value, "nontlm", 6) == 0) { >> + break; >> + case Opt_sec_nontlm: >> /* BB is there a better way to do this? */ >> vol->secFlg |= CIFSSEC_MAY_NTLMV2; >> + break; >> #ifdef CONFIG_CIFS_WEAK_PW_HASH >> - } else if (strnicmp(value, "lanman", 6) == 0) { >> + case Opt_sec_lanman: >> vol->secFlg |= CIFSSEC_MAY_LANMAN; >> + break; >> #endif >> - } else if (strnicmp(value, "none", 4) == 0) { >> + case Opt_sec_none: >> vol->nullauth = 1; >> - } else { >> + break; >> + default: >> cERROR(1, "bad security option: %s", value); >> return 1; >> } >> - } else if ((strnicmp(data, "unc", 3) == 0) >> - || (strnicmp(data, "target", 6) == 0) >> - || (strnicmp(data, "path", 4) == 0)) { >> + break; >> + /* unc || target || path */ >> + case Opt_unc: >> + case Opt_target: >> + case Opt_path: >> if (!value || !*value) { >> printk(KERN_WARNING "CIFS: invalid path to " >> "network resource\n"); >> @@ -1044,8 +1239,10 @@ cifs_parse_mount_options(char *options, const char *devname, >> printk(KERN_WARNING "CIFS: UNC name too long\n"); >> return 1; >> } >> - } else if ((strnicmp(data, "domain", 3) == 0) >> - || (strnicmp(data, "workgroup", 5) == 0)) { >> + break; >> + /* domain || workgroup */ >> + case Opt_domain: >> + case Opt_workgroup: >> if (!value || !*value) { >> printk(KERN_WARNING "CIFS: invalid domain name\n"); >> return 1; /* needs_arg; */ >> @@ -1060,7 +1257,8 @@ cifs_parse_mount_options(char *options, const char *devname, >> "long\n"); >> return 1; >> } >> - } else if (strnicmp(data, "prefixpath", 10) == 0) { >> + break; >> + case Opt_prefixpath: >> if (!value || !*value) { >> printk(KERN_WARNING >> "CIFS: invalid path prefix\n"); >> @@ -1082,7 +1280,8 @@ cifs_parse_mount_options(char *options, const char *devname, >> printk(KERN_WARNING "CIFS: prefix too long\n"); >> return 1; >> } >> - } else if (strnicmp(data, "iocharset", 9) == 0) { >> + break; >> + case Opt_iocharset: >> if (!value || !*value) { >> printk(KERN_WARNING "CIFS: invalid iocharset " >> "specified\n"); >> @@ -1099,58 +1298,72 @@ cifs_parse_mount_options(char *options, const char *devname, >> "too long.\n"); >> return 1; >> } >> - } else if (!strnicmp(data, "uid", 3)&& value&& *value) { >> - vol->linux_uid = simple_strtoul(value,&value, 0); >> - uid_specified = true; >> - } else if (!strnicmp(data, "forceuid", 8)) { >> + break; >> + case Opt_uid: >> + if (value&& *value) { >> + vol->linux_uid = >> + simple_strtoul(value,&value, 0); >> + uid_specified = true; >> + } >> + break; >> + case Opt_forceuid: >> override_uid = 1; >> - } else if (!strnicmp(data, "noforceuid", 10)) { >> + break; >> + case Opt_noforceuid: >> override_uid = 0; >> - } else if (!strnicmp(data, "gid", 3)&& value&& *value) { >> - vol->linux_gid = simple_strtoul(value,&value, 0); >> - gid_specified = true; >> - } else if (!strnicmp(data, "forcegid", 8)) { >> - override_gid = 1; >> - } else if (!strnicmp(data, "noforcegid", 10)) { >> - override_gid = 0; >> - } else if (strnicmp(data, "file_mode", 4) == 0) { >> + break; >> + case Opt_gid: >> if (value&& *value) { >> - vol->file_mode = >> + vol->linux_gid = >> simple_strtoul(value,&value, 0); >> + gid_specified = true; >> } >> - } else if (strnicmp(data, "dir_mode", 4) == 0) { >> + break; >> + case Opt_forcegid: >> + override_gid = 1; >> + break; >> + case Opt_noforcegid: >> + override_gid = 0; >> + break; >> + case Opt_file_mode: >> if (value&& *value) { >> - vol->dir_mode = >> + vol->file_mode = >> simple_strtoul(value,&value, 0); >> } >> - } else if (strnicmp(data, "dirmode", 4) == 0) { >> + break; >> + case Opt_dir_mode: >> if (value&& *value) { >> vol->dir_mode = >> simple_strtoul(value,&value, 0); >> } >> - } else if (strnicmp(data, "port", 4) == 0) { >> + break; >> + case Opt_port: >> if (value&& *value) { >> vol->port = >> simple_strtoul(value,&value, 0); >> } >> - } else if (strnicmp(data, "rsize", 5) == 0) { >> + break; >> + case Opt_rsize: >> if (value&& *value) { >> vol->rsize = >> simple_strtoul(value,&value, 0); >> } >> - } else if (strnicmp(data, "wsize", 5) == 0) { >> + break; >> + case Opt_wsize: >> if (value&& *value) { >> vol->wsize = >> simple_strtoul(value,&value, 0); >> } >> - } else if (strnicmp(data, "sockopt", 5) == 0) { >> + break; >> + case Opt_sockopt: >> if (!value || !*value) { >> cERROR(1, "no socket option specified"); >> continue; >> } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) { >> vol->sockopt_tcp_nodelay = 1; >> } >> - } else if (strnicmp(data, "netbiosname", 4) == 0) { >> + break; >> + case Opt_netbiosname: >> if (!value || !*value || (*value == ' ')) { >> cFYI(1, "invalid (empty) netbiosname"); >> } else { >> @@ -1173,7 +1386,8 @@ cifs_parse_mount_options(char *options, const char *devname, >> printk(KERN_WARNING "CIFS: netbiosname" >> " longer than 15 truncated.\n"); >> } >> - } else if (strnicmp(data, "servern", 7) == 0) { >> + break; >> + case Opt_servername: >> /* servernetbiosname specified override *SMBSERVER */ >> if (!value || !*value || (*value == ' ')) { >> cFYI(1, "empty server netbiosname specified"); >> @@ -1200,67 +1414,67 @@ cifs_parse_mount_options(char *options, const char *devname, >> printk(KERN_WARNING "CIFS: server net" >> "biosname longer than 15 truncated.\n"); >> } >> - } else if (strnicmp(data, "credentials", 4) == 0) { >> - /* ignore */ >> - } else if (strnicmp(data, "version", 3) == 0) { >> - /* ignore */ >> - } else if (strnicmp(data, "guest", 5) == 0) { >> - /* ignore */ >> - } else if (strnicmp(data, "rw", 2) == 0) { >> - /* ignore */ >> - } else if (strnicmp(data, "ro", 2) == 0) { >> - /* ignore */ >> - } else if (strnicmp(data, "noblocksend", 11) == 0) { >> + break; >> + case Opt_noblocksend: >> vol->noblocksnd = 1; >> - } else if (strnicmp(data, "noautotune", 10) == 0) { >> + break; >> + case Opt_noautotune: >> vol->noautotune = 1; >> - } else if ((strnicmp(data, "suid", 4) == 0) || >> - (strnicmp(data, "nosuid", 6) == 0) || >> - (strnicmp(data, "exec", 4) == 0) || >> - (strnicmp(data, "noexec", 6) == 0) || >> - (strnicmp(data, "nodev", 5) == 0) || >> - (strnicmp(data, "noauto", 6) == 0) || >> - (strnicmp(data, "dev", 3) == 0)) { >> - /* The mount tool or mount.cifs helper (if present) >> - uses these opts to set flags, and the flags are read >> - by the kernel vfs layer before we get here (ie >> - before read super) so there is no point trying to >> - parse these options again and set anything and it >> - is ok to just ignore them */ >> - continue; >> - } else if (strnicmp(data, "hard", 4) == 0) { >> + break; >> + /* hard || nosoft */ >> + case Opt_hard: >> + case Opt_nosoft: >> vol->retry = 1; >> - } else if (strnicmp(data, "soft", 4) == 0) { >> + break; >> + /* soft || nohard */ >> + case Opt_soft: >> + case Opt_nohard: >> vol->retry = 0; >> - } else if (strnicmp(data, "perm", 4) == 0) { >> + break; >> + case Opt_perm: >> vol->noperm = 0; >> - } else if (strnicmp(data, "noperm", 6) == 0) { >> + break; >> + case Opt_noperm: >> vol->noperm = 1; >> - } else if (strnicmp(data, "mapchars", 8) == 0) { >> + break; >> + case Opt_mapchars: >> vol->remap = 1; >> - } else if (strnicmp(data, "nomapchars", 10) == 0) { >> + break; >> + case Opt_nomapchars: >> vol->remap = 0; >> - } else if (strnicmp(data, "sfu", 3) == 0) { >> + break; >> + case Opt_sfu: >> vol->sfu_emul = 1; >> - } else if (strnicmp(data, "nosfu", 5) == 0) { >> + break; >> + case Opt_nosfu: >> vol->sfu_emul = 0; >> - } else if (strnicmp(data, "nodfs", 5) == 0) { >> + break; >> + case Opt_nodfs: >> vol->nodfs = 1; >> - } else if (strnicmp(data, "posixpaths", 10) == 0) { >> + break; >> + case Opt_posixpaths: >> vol->posix_paths = 1; >> - } else if (strnicmp(data, "noposixpaths", 12) == 0) { >> + break; >> + case Opt_noposixpaths: >> vol->posix_paths = 0; >> - } else if (strnicmp(data, "nounix", 6) == 0) { >> + break; >> + case Opt_nounix: >> vol->no_linux_ext = 1; >> - } else if (strnicmp(data, "nolinux", 7) == 0) { >> + break; >> + case Opt_nolinux: >> vol->no_linux_ext = 1; >> - } else if ((strnicmp(data, "nocase", 6) == 0) || >> - (strnicmp(data, "ignorecase", 10) == 0)) { >> + break; >> + /* nocase || ignorecase */ >> + case Opt_nocase: >> + case Opt_ignorecase: >> vol->nocase = 1; >> - } else if (strnicmp(data, "brl", 3) == 0) { >> + break; >> + case Opt_brl: >> vol->nobrl = 0; >> - } else if ((strnicmp(data, "nobrl", 5) == 0) || >> - (strnicmp(data, "nolock", 6) == 0)) { >> + break; >> + /* nobrl || nolock */ >> + case Opt_nobrl: >> + case Opt_nolock: >> vol->nobrl = 1; >> /* turn off mandatory locking in mode >> if remote locking is turned off since the >> @@ -1268,8 +1482,8 @@ cifs_parse_mount_options(char *options, const char *devname, >> if (vol->file_mode == >> (S_IALLUGO& ~(S_ISUID | S_IXGRP))) >> vol->file_mode = S_IALLUGO; >> - } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { >> - /* will take the shorter form "forcemand" as well */ >> + break; >> + case Opt_forcemandatorylock: >> /* This mount option will force use of mandatory >> (DOS/Windows style) byte range locks, instead of >> using posix advisory byte range locks, even if the >> @@ -1279,61 +1493,98 @@ cifs_parse_mount_options(char *options, const char *devname, >> would be used (mandatory locks is all that those >> those servers support) */ >> vol->mand_lock = 1; >> - } else if (strnicmp(data, "setuids", 7) == 0) { >> + break; >> + case Opt_setuids: >> vol->setuids = 1; >> - } else if (strnicmp(data, "nosetuids", 9) == 0) { >> + break; >> + case Opt_nosetuids: >> vol->setuids = 0; >> - } else if (strnicmp(data, "dynperm", 7) == 0) { >> + break; >> + case Opt_dynperm: >> vol->dynperm = true; >> - } else if (strnicmp(data, "nodynperm", 9) == 0) { >> + break; >> + case Opt_nodynperm: >> vol->dynperm = false; >> - } else if (strnicmp(data, "nohard", 6) == 0) { >> - vol->retry = 0; >> - } else if (strnicmp(data, "nosoft", 6) == 0) { >> - vol->retry = 1; >> - } else if (strnicmp(data, "nointr", 6) == 0) { >> - vol->intr = 0; >> - } else if (strnicmp(data, "intr", 4) == 0) { >> + break; >> + case Opt_intr: >> vol->intr = 1; >> - } else if (strnicmp(data, "nostrictsync", 12) == 0) { >> - vol->nostrictsync = 1; >> - } else if (strnicmp(data, "strictsync", 10) == 0) { >> + break; >> + case Opt_nointr: >> + vol->intr = 0; >> + break; >> + case Opt_strictsync: >> vol->nostrictsync = 0; >> - } else if (strnicmp(data, "serverino", 7) == 0) { >> + break; >> + case Opt_nostrictsync: >> + vol->nostrictsync = 1; >> + break; >> + case Opt_serverino: >> vol->server_ino = 1; >> - } else if (strnicmp(data, "noserverino", 9) == 0) { >> + break; >> + case Opt_noserverino: >> vol->server_ino = 0; >> - } else if (strnicmp(data, "cifsacl", 7) == 0) { >> + break; >> + case Opt_cifsacl: >> vol->cifs_acl = 1; >> - } else if (strnicmp(data, "nocifsacl", 9) == 0) { >> + break; >> + case Opt_nocifsacl: >> vol->cifs_acl = 0; >> - } else if (strnicmp(data, "acl", 3) == 0) { >> + break; >> + case Opt_acl: >> vol->no_psx_acl = 0; >> - } else if (strnicmp(data, "noacl", 5) == 0) { >> + break; >> + case Opt_noacl: >> vol->no_psx_acl = 1; >> + break; >> #ifdef CONFIG_CIFS_EXPERIMENTAL >> - } else if (strnicmp(data, "locallease", 6) == 0) { >> + case Opt_locallease: >> vol->local_lease = 1; >> + break; >> #endif >> - } else if (strnicmp(data, "sign", 4) == 0) { >> + case Opt_sign: >> vol->secFlg |= CIFSSEC_MUST_SIGN; >> - } else if (strnicmp(data, "seal", 4) == 0) { >> + break; >> + case Opt_seal: >> /* we do not do the following in secFlags because seal >> is a per tree connection (mount) not a per socket >> or per-smb connection option in the protocol */ >> /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ >> vol->seal = 1; >> - } else if (strnicmp(data, "direct", 6) == 0) { >> - vol->direct_io = 1; >> - } else if (strnicmp(data, "forcedirectio", 13) == 0) { >> + break; >> + /* direct || forcedirectio */ >> + case Opt_direct: >> + case Opt_forcedirectio: >> vol->direct_io = 1; >> - } else if (strnicmp(data, "noac", 4) == 0) { >> + break; >> + case Opt_noac: >> printk(KERN_WARNING "CIFS: Mount option noac not " >> "supported. Instead set " >> "/proc/fs/cifs/LookupCacheEnabled to 0\n"); >> - } else >> + break; >> + /* Ignore these */ >> + case Opt_credentials: >> + case Opt_version: >> + case Opt_guest: >> + case Opt_ro: >> + case Opt_rw: >> + /* The mount tool or mount.cifs helper (if present) uses these >> + opts to set flags, and the flags are read by the kernel vfs >> + layer before we get here (ie before read super) so there is >> + no point trying to parse these options again and set >> + anything and it is ok to just ignore them */ >> + case Opt_suid: >> + case Opt_nosuid: >> + case Opt_exec: >> + case Opt_noexec: >> + case Opt_dev: >> + case Opt_nodev: >> + case Opt_noauto: >> + break; >> + default: >> printk(KERN_WARNING "CIFS: Unknown mount option %s\n", >> data); >> + break; >> + } >> } >> if (vol->UNC == NULL) { >> if (devname == NULL) { >> > Finally got around to trying this out and I get the following oops when > mounting a share with these options: > > sec=krb5i,multises,noauto > > general protection fault: 0000 [#1] SMP > last sysfs file: /sys/devices/virtual/bdi/cifs-1/uevent > CPU 0 > Modules linked in: cifs nfsd lockd nfs_acl exportfs rpcsec_gss_krb5 auth_rpcgss des_generic sunrpc ipv6 microcode i2c_piix4 i2c_core virtio_net joydev virtio_balloon virtio_blk virtio_pci virtio_ring virtio [last unloaded: mperf] > > Pid: 1542, comm: mount.cifs Not tainted 2.6.35-0.2.rc3.git0.fc14.x86_64 #1 / > RIP: 0010:[<ffffffff8123728c>] [<ffffffff8123728c>] strchr+0x14/0x1d > RSP: 0018:ffff880039a65bd8 EFLAGS: 00010246 > RAX: 7365735f626d735f RBX: 0000000000000000 RCX: ffff88003cb4d041 > RDX: ffff880039a65c6d RSI: 0000000000000025 RDI: 7365735f626d735f > RBP: ffff880039a65bd8 R08: 000000000000002c R09: 000000000000002c > R10: 00000000000080d0 R11: ffffffff8113bc6c R12: ffff88003cb4d041 > R13: ffffffffa0219d40 R14: 0000000000000000 R15: 7365735f626d735f > FS: 00007f1fbcba6720(0000) GS:ffff880004600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000001a31818 CR3: 000000003a287000 CR4: 00000000000006f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process mount.cifs (pid: 1542, threadinfo ffff880039a64000, task ffff880039adc8a0) > Stack: > ffff880039a65c48 ffffffff8123b1ee ffff88003a18b990 ffff880039a65cd8 > <0> ffff88003cb4d041 ffffffff8111cd42 ffffffffa0202f86 7365735f626d735f > <0> ffff88003997de30 ffff88003997de30 ffff88003cc94840 00000000ffffffff > Call Trace: > [<ffffffff8123b1ee>] match_token+0x4b/0x1a8 > [<ffffffff8111cd42>] ? __kmalloc+0x17c/0x18e > [<ffffffffa0202f86>] ? cifs_mount+0x639/0x1737 [cifs] > [<ffffffffa0202c11>] cifs_mount+0x2c4/0x1737 [cifs] > [<ffffffffa01f5aa4>] ? cifs_get_sb+0x110/0x2e4 [cifs] > [<ffffffffa01f5b00>] cifs_get_sb+0x16c/0x2e4 [cifs] > [<ffffffff8112c946>] vfs_kern_mount+0xbd/0x19b > [<ffffffff8112ca8c>] do_kern_mount+0x4d/0xed > [<ffffffff8114368a>] do_mount+0x776/0x7ed > [<ffffffff811128aa>] ? alloc_pages_current+0xa7/0xca > [<ffffffff81143789>] sys_mount+0x88/0xc2 > [<ffffffff81009c32>] system_call_fastpath+0x16/0x1b > Code: 14 84 c0 74 0e 48 ff c7 48 ff c6 48 ff ca 48 85 d2 75 e1 31 c0 c9 c3 55 48 89 f8 48 89 e5 eb 0b 84 d2 75 04 31 c0 eb 0a 48 ff c0<8a> 10 40 38 f2 75 ee c9 c3 55 48 89 f8 48 89 e5 eb 03 48 ff c0 > RIP [<ffffffff8123728c>] strchr+0x14/0x1d > RSP<ffff880039a65bd8> > ---[ end trace 50d173d44b64b1d9 ]--- > > It's crashing in this match_token() call: > > gdb) list *(cifs_mount+0x2c4) > 0xdcf7 is in cifs_mount (fs/cifs/connect.c:1094). > 1089 while ((data = strsep(&options, separator)) != NULL) { > 1090 if (!*data) > 1091 continue; > 1092 if ((value = strchr(data, '=')) != NULL) > 1093 *value++ = '\0'; > 1094 switch (match_token(data, cifs_mount_options, args)) { > 1095 case Opt_user_xattr: > 1096 vol->no_xattr = 0; > 1097 break; > 1098 case Opt_nouser_xattr: > (gdb) quit > > I have a family obligation to take care of tonight; I'll take a look tomorrow. ^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <1274356716-25765-1-git-send-email-scott.lovenberg@gmail.com>
[not found] ` <1274356716-25765-1-git-send-email-scott.lovenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-06-26 17:05 ` [linux-cifs-client] [PATCH] cifs: use standard token parser for mount options Jeff Layton
[not found] ` <20100626130538.6b828b40-9yPaYZwiELC+kQycOl6kW4xkIHaj4LzF@public.gmane.org>
2010-06-28 17:00 ` Scott Lovenberg
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