1# 2# CDDL HEADER START 3# 4# The contents of this file are subject to the terms of the 5# Common Development and Distribution License (the "License"). 6# You may not use this file except in compliance with the License. 7# 8# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9# or http://www.opensolaris.org/os/licensing. 10# See the License for the specific language governing permissions 11# and limitations under the License. 12# 13# When distributing Covered Code, include this CDDL HEADER in each 14# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15# If applicable, add the following below this CDDL HEADER, with the 16# fields enclosed by brackets "[]" replaced with your own identifying 17# information: Portions Copyright [yyyy] [name of copyright owner] 18# 19# CDDL HEADER END 20# 21# Copyright 2008 Sun Microsystems, Inc. All rights reserved. 22# Use is subject to license terms. 23# 24# Copyright 2024 Oxide Computer Company 25# 26# Create two files from a list of input strings; 27# new_list.c contains an array of characters indexed into by perror and 28# strerror and an array of strings for strerrorname_np; 29# errlst.c contains an array of pointers to strings for compatibility 30# with existing user programs that reference it directly; 31# errlst.c references the strings in new_list.c indirectly using a library 32# private symbol, __sys_errs[], in order to get relative relocations. 33# 34# Since the 64 bit ABI doesn't define the old symbols, the second file 35# should be left out 64 bit libraries. 36# 37# WARNING! 38# Do NOT add entries to this list such that it grows the list 39# beyond the last entry: 40# 151 Stale NFS file handle 41# Growing this list may damage programs because this array is 42# copied into a reserved array at runtime. See bug 4097669. 43# 44# If you need to add an entry please use one of the empty 45# slots. 46# The arrays _sys_errs[], accessible via perror(3C) and strerror(3C) 47# interfaces, and sys_errlist[] are created from this list. 48# It is the direct referencing of sys_errlist[] that is the problem. 49# Your code should only use perror() or strerror(). 50 51 52BEGIN { 53 FS = "\t" 54 hi = 0 55 56 newfile = "new_list.c" 57 oldfile = "errlst.c" 58 59 print "#pragma weak _sys_errlist = sys_errlist\n" >oldfile 60 print "#include \"lint.h\"\n" >oldfile 61 # We need to include the errors strings proper in the 62 # C source for gettext; the macro C allows us to embed 63 # them as comment. 64 print "#define\tC(x)\n" >oldfile 65 print "extern const char __sys_errs[];\n" >oldfile 66 print "const char *sys_errlist[] = {" >oldfile 67 68 print "#include \"lint.h\"" >newfile 69 print "#include <sys/isa_defs.h>\n" >newfile 70 print "#include <errno.h>\n" >newfile 71 print "#pragma weak __sys_errs = _sys_errs\n" >newfile 72 } 73 74/^[0-9]+/ { 75 if ($1 > hi) 76 hi = $1 77 aname[$1] = $2 78 astr[$1] = $3 79 } 80 81END { 82 print "const int _sys_index[] =\n{" >newfile 83 k = 0 84 mx = 151 # max number of entries for sys_errlist[] 85 if (hi > mx) 86 { 87 printf "awk: ERROR! sys_errlist[] > %d entries\n", mx 88 printf "Please read comments in" 89 printf " usr/src/lib/libc/port/gen/errlist\n" 90 exit 1 91 } 92 for (j = 0; j <= hi; ++j) 93 { 94 if (astr[j] == "") 95 astr[j] = sprintf("Error %d", j) 96 printf "\t%d,\n", k >newfile 97 printf "\t&__sys_errs[%d], C(\"%s\")\n", k, astr[j] \ 98 >oldfile 99 k += length(astr[j]) + 1 100 } 101 print "};\n" >newfile 102 103 print "/* This is one long string */" >newfile 104 printf "const char _sys_errs[%d] =\n", k >newfile 105 for (j = 0; j <= hi; ++j) 106 { 107 printf "\t\"%s\\0\"\n", astr[j] >newfile 108 } 109 print ";\n" >newfile 110 print "};\n" >oldfile 111 112 # 113 # This stanza is used to generate the array of names for mapping 114 # an errno to its constant (e.g. "ENOENT"). 115 # 116 printf "const char *_sys_err_names[%d] = {\n", hi + 1 >newfile 117 printf "\t[0] = \"0\",\n" >newfile 118 for (j = 1; j <= hi; ++j) 119 { 120 if (aname[j] != "" && aname[j] != "SKIP") 121 printf "\t[%s] = \"%s\",\n", aname[j], aname[j] \ 122 >newfile 123 } 124 print "};\n" > newfile 125 126 print "const int _sys_num_err = " hi + 1 ";\n" >newfile 127 print "#undef sys_nerr" >newfile 128 print "#ifndef _LP64" >newfile 129 print "#pragma weak _sys_nerr = _sys_num_err" >newfile 130 print "#pragma weak sys_nerr = _sys_num_err" >newfile 131 print "#endif /* _LP64 */" >newfile 132 } 133