1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include <linux/module.h> 4 #include <linux/nfs_common.h> 5 #include <linux/nfs4.h> 6 7 /* 8 * We need to translate between nfs status return values and 9 * the local errno values which may not be the same. 10 */ 11 static const struct { 12 int stat; 13 int errno; 14 } nfs_errtbl[] = { 15 { NFS_OK, 0 }, 16 { NFSERR_PERM, -EPERM }, 17 { NFSERR_NOENT, -ENOENT }, 18 { NFSERR_IO, -errno_NFSERR_IO}, 19 { NFSERR_NXIO, -ENXIO }, 20 /* { NFSERR_EAGAIN, -EAGAIN }, */ 21 { NFSERR_ACCES, -EACCES }, 22 { NFSERR_EXIST, -EEXIST }, 23 { NFSERR_XDEV, -EXDEV }, 24 { NFSERR_NODEV, -ENODEV }, 25 { NFSERR_NOTDIR, -ENOTDIR }, 26 { NFSERR_ISDIR, -EISDIR }, 27 { NFSERR_INVAL, -EINVAL }, 28 { NFSERR_FBIG, -EFBIG }, 29 { NFSERR_NOSPC, -ENOSPC }, 30 { NFSERR_ROFS, -EROFS }, 31 { NFSERR_MLINK, -EMLINK }, 32 { NFSERR_NAMETOOLONG, -ENAMETOOLONG }, 33 { NFSERR_NOTEMPTY, -ENOTEMPTY }, 34 { NFSERR_DQUOT, -EDQUOT }, 35 { NFSERR_STALE, -ESTALE }, 36 { NFSERR_REMOTE, -EREMOTE }, 37 #ifdef EWFLUSH 38 { NFSERR_WFLUSH, -EWFLUSH }, 39 #endif 40 { NFSERR_BADHANDLE, -EBADHANDLE }, 41 { NFSERR_NOT_SYNC, -ENOTSYNC }, 42 { NFSERR_BAD_COOKIE, -EBADCOOKIE }, 43 { NFSERR_NOTSUPP, -ENOTSUPP }, 44 { NFSERR_TOOSMALL, -ETOOSMALL }, 45 { NFSERR_SERVERFAULT, -EREMOTEIO }, 46 { NFSERR_BADTYPE, -EBADTYPE }, 47 { NFSERR_JUKEBOX, -EJUKEBOX }, 48 { -1, -EIO } 49 }; 50 51 /** 52 * nfs_stat_to_errno - convert an NFS status code to a local errno 53 * @status: NFS status code to convert 54 * 55 * Returns a local errno value, or -EIO if the NFS status code is 56 * not recognized. This function is used jointly by NFSv2 and NFSv3. 57 */ 58 int nfs_stat_to_errno(enum nfs_stat status) 59 { 60 int i; 61 62 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 63 if (nfs_errtbl[i].stat == (int)status) 64 return nfs_errtbl[i].errno; 65 } 66 return nfs_errtbl[i].errno; 67 } 68 EXPORT_SYMBOL_GPL(nfs_stat_to_errno); 69 70 /* 71 * We need to translate between nfs v4 status return values and 72 * the local errno values which may not be the same. 73 */ 74 static const struct { 75 int stat; 76 int errno; 77 } nfs4_errtbl[] = { 78 { NFS4_OK, 0 }, 79 { NFS4ERR_PERM, -EPERM }, 80 { NFS4ERR_NOENT, -ENOENT }, 81 { NFS4ERR_IO, -errno_NFSERR_IO}, 82 { NFS4ERR_NXIO, -ENXIO }, 83 { NFS4ERR_ACCESS, -EACCES }, 84 { NFS4ERR_EXIST, -EEXIST }, 85 { NFS4ERR_XDEV, -EXDEV }, 86 { NFS4ERR_NOTDIR, -ENOTDIR }, 87 { NFS4ERR_ISDIR, -EISDIR }, 88 { NFS4ERR_INVAL, -EINVAL }, 89 { NFS4ERR_FBIG, -EFBIG }, 90 { NFS4ERR_NOSPC, -ENOSPC }, 91 { NFS4ERR_ROFS, -EROFS }, 92 { NFS4ERR_MLINK, -EMLINK }, 93 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 94 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 95 { NFS4ERR_DQUOT, -EDQUOT }, 96 { NFS4ERR_STALE, -ESTALE }, 97 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 98 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 99 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 100 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 101 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 102 { NFS4ERR_BADTYPE, -EBADTYPE }, 103 { NFS4ERR_LOCKED, -EAGAIN }, 104 { NFS4ERR_SYMLINK, -ELOOP }, 105 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 106 { NFS4ERR_DEADLOCK, -EDEADLK }, 107 { NFS4ERR_NOXATTR, -ENODATA }, 108 { NFS4ERR_XATTR2BIG, -E2BIG }, 109 { -1, -EIO } 110 }; 111 112 /* 113 * Convert an NFS error code to a local one. 114 * This one is used by NFSv4. 115 */ 116 int nfs4_stat_to_errno(int stat) 117 { 118 int i; 119 for (i = 0; nfs4_errtbl[i].stat != -1; i++) { 120 if (nfs4_errtbl[i].stat == stat) 121 return nfs4_errtbl[i].errno; 122 } 123 if (stat <= 10000 || stat > 10100) { 124 /* The server is looney tunes. */ 125 return -EREMOTEIO; 126 } 127 /* If we cannot translate the error, the recovery routines should 128 * handle it. 129 * Note: remaining NFSv4 error codes have values > 10000, so should 130 * not conflict with native Linux error codes. 131 */ 132 return -stat; 133 } 134 EXPORT_SYMBOL_GPL(nfs4_stat_to_errno); 135