Commit | Line | Data |
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bb304ec8 JH |
1 | #!/usr/bin/perl -w |
2 | ||
3 | # | |
4 | # findrfuncs: find reentrant variants of functions used in an executable. | |
5 | # Requires a functional "nm -u". Searches headers in /usr/include | |
6 | # to find available *_r functions and looks for non-reentrant | |
7 | # variants used in the supplied executable. | |
8 | # | |
9 | # Gurusamy Sarathy | |
10 | # gsar@ActiveState.com | |
11 | # | |
12 | # Hacked to automatically find the executable and shared objects. | |
13 | # --jhi | |
14 | ||
15 | use strict; | |
16 | use File::Find; | |
17 | ||
18 | my @EXES; | |
19 | my $NMU = 'nm -u'; | |
20 | my @INCDIRS = qw(/usr/include); | |
21 | my $SO = 'so'; | |
22 | my $EXE = ''; | |
23 | ||
24 | if (open(CONFIG, "config.sh")) { | |
25 | local $/; | |
26 | my $CONFIG = <CONFIG>; | |
27 | $SO = $1 if $CONFIG =~ /^so='(\w+)'/m; | |
28 | $EXE = $1 if $CONFIG =~ /^_exe='\.(\w+)'/m; | |
c8688140 | 29 | close(CONFIG); |
bb304ec8 JH |
30 | } |
31 | ||
32 | push @EXES, "perl$EXE"; | |
33 | ||
72108f2b | 34 | find(sub {push @EXES, $File::Find::name if /\.$SO$/}, '.' ); |
bb304ec8 JH |
35 | |
36 | push @EXES, @ARGV; | |
37 | ||
38 | if ($^O eq 'dec_osf') { | |
39 | $NMU = 'nm -Bu'; | |
c8688140 JH |
40 | } elsif ($^O eq 'irix') { |
41 | $NMU = 'nm -pu'; | |
bb304ec8 JH |
42 | } |
43 | ||
44 | my %rfuncs; | |
45 | my @syms; | |
46 | find(sub { | |
47 | return unless -f $File::Find::name; | |
72108f2b JH |
48 | local *F; |
49 | open F, "<$File::Find::name" | |
bb304ec8 JH |
50 | or die "Can't open $File::Find::name: $!"; |
51 | my $line; | |
72108f2b | 52 | while (defined ($line = <F>)) { |
bb304ec8 JH |
53 | if ($line =~ /\b(\w+_r)\b/) { |
54 | #warn "$1 => $File::Find::name\n"; | |
c8688140 | 55 | $rfuncs{$1}->{$File::Find::name}++; |
bb304ec8 JH |
56 | } |
57 | } | |
72108f2b | 58 | close F; |
bb304ec8 JH |
59 | }, @INCDIRS); |
60 | ||
61 | # delete bogus symbols grepped out of comments and such | |
62 | delete $rfuncs{setlocale_r} if $^O eq 'linux'; | |
63 | ||
b4e83e5b | 64 | # delete obsolete (as promised by man pages) symbols |
205a1031 | 65 | my $netdb_r_obsolete; |
b4e83e5b JH |
66 | if ($^O eq 'hpux') { |
67 | delete $rfuncs{crypt_r}; | |
10bc17b6 | 68 | delete $rfuncs{drand48_r}; |
efa45b01 JH |
69 | delete $rfuncs{endgrent_r}; |
70 | delete $rfuncs{endpwent_r}; | |
10bc17b6 JH |
71 | delete $rfuncs{getgrent_r}; |
72 | delete $rfuncs{getpwent_r}; | |
b4e83e5b | 73 | delete $rfuncs{setlocale_r}; |
10bc17b6 | 74 | delete $rfuncs{srand48_r}; |
b4e83e5b | 75 | delete $rfuncs{strerror_r}; |
205a1031 | 76 | $netdb_r_obsolete = 1; |
b4e83e5b JH |
77 | } elsif ($^O eq 'dec_osf') { |
78 | delete $rfuncs{crypt_r}; | |
79 | delete $rfuncs{strerror_r}; | |
205a1031 JH |
80 | $netdb_r_obsolete = 1; |
81 | } | |
82 | if ($netdb_r_obsolete) { | |
83 | delete @rfuncs{qw(endhostent_r | |
84 | endnetent_r | |
85 | endprotoent_r | |
86 | endservent_r | |
87 | gethostbyaddr_r | |
88 | gethostbyname_r | |
89 | gethostent_r | |
90 | getnetbyaddr_r | |
91 | getnetbyname_r | |
92 | getnetent_r | |
205a1031 | 93 | getprotobyname_r |
10bc17b6 | 94 | getprotobynumber_r |
205a1031 JH |
95 | getprotoent_r |
96 | getservbyname_r | |
97 | getservbyport_r | |
98 | getservent_r | |
99 | sethostent_r | |
100 | setnetent_r | |
101 | setprotoent_r | |
102 | setservent_r)}; | |
b4e83e5b JH |
103 | } |
104 | ||
6c03d0f3 JH |
105 | my %syms; |
106 | ||
bb304ec8 | 107 | for my $exe (@EXES) { |
c8688140 | 108 | # warn "#--- $exe\n"; |
bb304ec8 JH |
109 | for my $sym (`$NMU $exe`) { |
110 | chomp $sym; | |
bb304ec8 | 111 | $sym =~ s/^\s+//; |
c8688140 | 112 | $sym =~ s/^([0-9A-Fa-f]+\s+)?[Uu]\s+//; |
72108f2b | 113 | $sym =~ s/\s+[Uu]\s+-$//; |
bb304ec8 JH |
114 | next if /\s/; |
115 | $sym =~ s/\@.*\z//; # remove @@GLIBC_2.0 etc | |
116 | # warn "#### $sym\n"; | |
6c03d0f3 | 117 | if (exists $rfuncs{"${sym}_r"} && ! $syms{"$sym:$exe"}++) { |
bb304ec8 JH |
118 | push @syms, $sym; |
119 | } | |
120 | } | |
121 | ||
122 | if (@syms) { | |
123 | print "\nFollowing symbols in $exe have reentrant versions:\n"; | |
124 | for my $sym (@syms) { | |
c8688140 JH |
125 | my @f = sort keys %{$rfuncs{$sym . '_r'}}; |
126 | print "$sym => $sym" . "_r (@f)\n"; | |
bb304ec8 JH |
127 | } |
128 | } | |
129 | @syms = (); | |
130 | } | |
131 |