annotate lib/portability.h @ 1600:ce22ad7a26c1 draft

Work with buildroot's extensively patched uClibc, and for nommu support move xfork() to portability.h and #ifdef based on __uClinux__ (which seems to be the nommu compiler define).
author Rob Landley <rob@landley.net>
date Thu, 04 Dec 2014 21:46:59 -0600
parents e85e5f3b87c2
children aafd2f28245a
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8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
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1 // Workarounds for horrible build environment idiosyncrasies.
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8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
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3 // Instead of polluting the code with strange #ifdefs to work around bugs
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4 // in specific compiler, library, or OS versions, localize all that here
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5 // and in portability.c
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6
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7 // For musl
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8 #define _ALL_SOURCE
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10 // Test for gcc (using compiler builtin #define)
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11
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12 #ifdef __GNUC__
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13 #define noreturn __attribute__((noreturn))
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14 #else
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15 #define noreturn
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16 #endif
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18 // Always use long file support.
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19 #define _FILE_OFFSET_BITS 64
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20
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21 // This isn't in the spec, but it's how we determine what libc we're using.
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22
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58d2fd7484bd More header fiddling: crypt.h is silly, SUSv4 requires crypt() to be prototyped in unistd.h. The fact glibc refuses to do so without a wacky #define is a glibc bug, treat it as such.
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23 #include <features.h>
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24
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25 // Various constants old build environments might not have even if kernel does
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27 #ifndef AT_FDCWD
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28 #define AT_FDCWD -100
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29 #endif
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31 #ifndef AT_SYMLINK_NOFOLLOW
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32 #define AT_SYMLINK_NOFOLLOW 0x100
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33 #endif
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35 #ifndef AT_REMOVEDIR
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36 #define AT_REMOVEDIR 0x200
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37 #endif
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38
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39 // We don't define GNU_dammit because we're not part of the gnu project, and
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40 // don't want to get any FSF on us. Unfortunately glibc (gnu libc)
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41 // won't give us Linux syscall wrappers without claiming to be part of the
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42 // gnu project (because Stallman's "GNU owns Linux" revisionist history
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43 // crusade includes the kernel, even though Linux was inspired by Minix).
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44
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45 // We use most non-posix Linux syscalls directly through the syscall() wrapper,
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46 // but even many posix-2008 functions aren't provided by glibc unless you
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47 // claim it's in the name of Gnu.
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48
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49 #if defined(__GLIBC__)
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50 // "Function prototypes shall be provided." but aren't.
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51 // http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/unistd.h.html
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52 char *crypt(const char *key, const char *salt);
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53
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54 // According to posix, #include header, get a function definition. But glibc...
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55 // http://pubs.opengroup.org/onlinepubs/9699919799/functions/wcwidth.html
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56 #include <wchar.h>
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57 int wcwidth(wchar_t wc);
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58
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59 // see http://pubs.opengroup.org/onlinepubs/9699919799/functions/strptime.html
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60 #include <time.h>
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61 char *strptime(const char *buf, const char *format, struct tm *tm);
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62
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63 // uClibc pretends to be glibc and copied a lot of its bugs, but has a few more
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64 #if defined(__UCLIBC__)
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65 #include <unistd.h>
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66 #include <stdio.h>
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67 ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream);
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68 char *stpcpy(char *dest, const char *src);
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69 pid_t getsid(pid_t pid);
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70
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71 // uClibc's last-ever release was in 2012, so of course it doesn't define
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72 // any flag newer than MS_MOVE, which was added in 2001 (linux 2.5.0.5),
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73 // eleven years earlier.
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74
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75 #include <sys/mount.h>
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76 #ifndef MS_MOVE
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77 #define MS_MOVE (1<<13)
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78 #endif
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79 #ifndef MS_REC
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80 #define MS_REC (1<<14)
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81 #endif
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82 #ifndef MS_SILENT
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83 #define MS_SILENT (1<<15)
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84 #endif
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85 #ifndef MS_UNBINDABLE
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86 #define MS_UNBINDABLE (1<<17)
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87 #endif
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88 #ifndef MS_PRIVATE
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89 #define MS_PRIVATE (1<<18)
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90 #endif
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91 #ifndef MS_SLAVE
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92 #define MS_SLAVE (1<<19)
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93 #endif
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94 #ifndef MS_SHARED
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95 #define MS_SHARED (1<<20)
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96 #endif
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97
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98 // When building under obsolete glibc (Ubuntu 8.04-ish), hold its hand a bit.
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99 #elif __GLIBC__ == 2 && __GLIBC_MINOR__ < 10
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100 #define fstatat fstatat64
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101 int fstatat64(int dirfd, const char *pathname, void *buf, int flags);
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102 int readlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz);
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103 char *stpcpy(char *dest, const char *src);
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104 #include <sys/stat.h>
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105 int fchmodat(int dirfd, const char *pathname, mode_t mode, int flags);
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
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parents: 600
diff changeset
106 int openat(int dirfd, const char *pathname, int flags, ...);
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
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parents: 600
diff changeset
107 #include <dirent.h>
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
108 DIR *fdopendir(int fd);
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
109 #include <unistd.h>
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
110 int fchownat(int dirfd, const char *pathname,
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
111 uid_t owner, gid_t group, int flags);
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
112 int isblank(int c);
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
113 int unlinkat(int dirfd, const char *pathname, int flags);
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
114 #include <stdio.h>
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
Rob Landley <rob@landley.net>
parents: 600
diff changeset
115 ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream);
800
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
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116
806
bbec26ccb40c Comment updates and a policy statement about avoiding #define GNU_dammit
Rob Landley <rob@landley.net>
parents: 800
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117 // Straight from posix-2008, things old glibc had but didn't prototype
800
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
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parents: 789
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118
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
diff changeset
119 int faccessat(int fd, const char *path, int amode, int flag);
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
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parents: 789
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120 int linkat(int fd1, const char *path1, int fd2, const char *path2, int flag);
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
diff changeset
121 int mkdirat(int fd, const char *path, mode_t mode);
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
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122 int symlinkat(const char *path1, int fd, const char *path2);
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
diff changeset
123 int mknodat(int fd, const char *path, mode_t mode, dev_t dev);
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
diff changeset
124 #include <sys/time.h>
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
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125 int futimens(int fd, const struct timespec times[2]);
4ffb735aea59 More support for old (~2008) build environments, move the #ifdef checks for symbols out of specific library version checks (shouldn't hurt anything), remove obsolete debug macro.
Rob Landley <rob@landley.net>
parents: 789
diff changeset
126 int utimensat(int fd, const char *path, const struct timespec times[2], int flag);
1148
d01ab969cc5d Only define MNT_DETACH for old glibc, portability.h included _before_ sys/mount.h...
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127
d01ab969cc5d Only define MNT_DETACH for old glibc, portability.h included _before_ sys/mount.h...
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parents: 1146
diff changeset
128 #ifndef MNT_DETACH
d01ab969cc5d Only define MNT_DETACH for old glibc, portability.h included _before_ sys/mount.h...
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129 #define MNT_DETACH 2
d01ab969cc5d Only define MNT_DETACH for old glibc, portability.h included _before_ sys/mount.h...
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parents: 1146
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130 #endif
691
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
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parents: 600
diff changeset
131 #endif
8871e8002812 Older versions of glibc predated posix-2008. They still provide most of what we need, but require a boot to the headers to get them to admit it. Note that uClibc lies and claims to be glibc so we have to specifically exclude it here.
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parents: 600
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132
550
b2194045c40e Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
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parents: 549
diff changeset
133 #endif
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents: 53
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134
1512
7afd32673a5c Workaround for musl's faccessat bug (the rm -r "error: is a directory" thing).
Rob Landley <rob@landley.net>
parents: 1494
diff changeset
135 #ifdef __MUSL__
7afd32673a5c Workaround for musl's faccessat bug (the rm -r "error: is a directory" thing).
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parents: 1494
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136 #include <unistd.h>
7afd32673a5c Workaround for musl's faccessat bug (the rm -r "error: is a directory" thing).
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parents: 1494
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137 // Without this "rm -r dir" fails with "is directory".
7afd32673a5c Workaround for musl's faccessat bug (the rm -r "error: is a directory" thing).
Rob Landley <rob@landley.net>
parents: 1494
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138 #define faccessat(A, B, C, D) faccessat(A, B, C, 0)
7afd32673a5c Workaround for musl's faccessat bug (the rm -r "error: is a directory" thing).
Rob Landley <rob@landley.net>
parents: 1494
diff changeset
139 #endif
7afd32673a5c Workaround for musl's faccessat bug (the rm -r "error: is a directory" thing).
Rob Landley <rob@landley.net>
parents: 1494
diff changeset
140
806
bbec26ccb40c Comment updates and a policy statement about avoiding #define GNU_dammit
Rob Landley <rob@landley.net>
parents: 800
diff changeset
141 // Work out how to do endianness
100
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
142
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
143 #ifndef __APPLE__
c3d1d74d5d8f MacOS X has a defective sed with no -r.
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parents: 94
diff changeset
144 #include <byteswap.h>
53
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
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parents:
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145 #include <endian.h>
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parents:
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146
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
147 #if __BYTE_ORDER == __BIG_ENDIAN
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
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parents:
diff changeset
148 #define IS_BIG_ENDIAN 1
100
c3d1d74d5d8f MacOS X has a defective sed with no -r.
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parents: 94
diff changeset
149 #else
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
150 #define IS_BIG_ENDIAN 0
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
151 #endif
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
152
549
1f5bd8c93093 Implement Apple and Android versions of getline(), getdelim(), and clearenv().
Georgi Chorbadzhiyski <gf@unixsol.org>
parents: 533
diff changeset
153 int clearenv(void);
100
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
154 #else
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
155
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
156 #ifdef __BIG_ENDIAN__
c3d1d74d5d8f MacOS X has a defective sed with no -r.
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parents: 94
diff changeset
157 #define IS_BIG_ENDIAN 1
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
158 #else
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
159 #define IS_BIG_ENDIAN 0
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
160 #endif
c3d1d74d5d8f MacOS X has a defective sed with no -r.
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parents: 94
diff changeset
161
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
162 #endif
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
163
c3d1d74d5d8f MacOS X has a defective sed with no -r.
Rob Landley <rob@landley.net>
parents: 94
diff changeset
164 #if IS_BIG_ENDIAN
53
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
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165 #define IS_LITTLE_ENDIAN 0
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parents:
diff changeset
166 #define SWAP_BE16(x) (x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
167 #define SWAP_BE32(x) (x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
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parents:
diff changeset
168 #define SWAP_BE64(x) (x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
169 #define SWAP_LE16(x) bswap_16(x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
170 #define SWAP_LE32(x) bswap_32(x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
171 #define SWAP_LE64(x) bswap_64(x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
172 #else
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
173 #define IS_LITTLE_ENDIAN 1
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
174 #define SWAP_BE16(x) bswap_16(x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
175 #define SWAP_BE32(x) bswap_32(x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
176 #define SWAP_BE64(x) bswap_64(x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
177 #define SWAP_LE16(x) (x)
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parents:
diff changeset
178 #define SWAP_LE32(x) (x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
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parents:
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179 #define SWAP_LE64(x) (x)
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
diff changeset
180 #endif
94
884c03c29f21 Teach build to build only the toys/*.c selected in .config, and teach
Rob Landley <rob@landley.net>
parents: 63
diff changeset
181
1567
73eb55d21cde Patch from Elliott Hughes for Android/bionic build.
Rob Landley <rob@landley.net>
parents: 1565
diff changeset
182 #if defined(__APPLE__) \
1275
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
183 || (defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 10)
549
1f5bd8c93093 Implement Apple and Android versions of getline(), getdelim(), and clearenv().
Georgi Chorbadzhiyski <gf@unixsol.org>
parents: 533
diff changeset
184 ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream);
1f5bd8c93093 Implement Apple and Android versions of getline(), getdelim(), and clearenv().
Georgi Chorbadzhiyski <gf@unixsol.org>
parents: 533
diff changeset
185 ssize_t getline(char **lineptr, size_t *n, FILE *stream);
1f5bd8c93093 Implement Apple and Android versions of getline(), getdelim(), and clearenv().
Georgi Chorbadzhiyski <gf@unixsol.org>
parents: 533
diff changeset
186 #endif
813
52e69f6710ca Compile time probe to fish O_NOFOLLOW out of linux headers when fcntl doesn't conform to posix-2008.
Rob Landley <rob@landley.net>
parents: 812
diff changeset
187
1235
63db77909fc8 Group headers by standard (POSIX or LSB) or function (internationalization, networking). Move headers standards ignore (but which have been there >15 years) to lib/portability.h. Fold xregcomp into lib since it's posix.
Rob Landley <rob@landley.net>
parents: 1186
diff changeset
188 // Linux headers not listed by POSIX or LSB
63db77909fc8 Group headers by standard (POSIX or LSB) or function (internationalization, networking). Move headers standards ignore (but which have been there >15 years) to lib/portability.h. Fold xregcomp into lib since it's posix.
Rob Landley <rob@landley.net>
parents: 1186
diff changeset
189 #include <sys/mount.h>
63db77909fc8 Group headers by standard (POSIX or LSB) or function (internationalization, networking). Move headers standards ignore (but which have been there >15 years) to lib/portability.h. Fold xregcomp into lib since it's posix.
Rob Landley <rob@landley.net>
parents: 1186
diff changeset
190 #include <sys/swap.h>
63db77909fc8 Group headers by standard (POSIX or LSB) or function (internationalization, networking). Move headers standards ignore (but which have been there >15 years) to lib/portability.h. Fold xregcomp into lib since it's posix.
Rob Landley <rob@landley.net>
parents: 1186
diff changeset
191
1564
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
192 // Android is missing some headers and functions
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
193 // "generated/config.h" is included first
1565
a3500bd8b322 Fixups for the android/bionic build probes patch.
Rob Landley <rob@landley.net>
parents: 1564
diff changeset
194 #if CFG_TOYBOX_SHADOW
1564
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
195 #include <shadow.h>
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
196 #endif
1565
a3500bd8b322 Fixups for the android/bionic build probes patch.
Rob Landley <rob@landley.net>
parents: 1564
diff changeset
197 #if CFG_TOYBOX_UTMPX
1564
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
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parents: 1512
diff changeset
198 #include <utmpx.h>
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
199 #endif
1565
a3500bd8b322 Fixups for the android/bionic build probes patch.
Rob Landley <rob@landley.net>
parents: 1564
diff changeset
200 #if CFG_TOYBOX_PTY
1564
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
201 #include <pty.h>
1565
a3500bd8b322 Fixups for the android/bionic build probes patch.
Rob Landley <rob@landley.net>
parents: 1564
diff changeset
202 #else
a3500bd8b322 Fixups for the android/bionic build probes patch.
Rob Landley <rob@landley.net>
parents: 1564
diff changeset
203 pid_t forkpty(int *amaster, char *name, void *termp, void *winp);
1564
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
204 #endif
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
205
685a0da6ca59 probe for getspnam(), forkpty(), utmpx, replace sethostname()
Isaac Dunham <ibid.ag@gmail.com>
parents: 1512
diff changeset
206
1259
565980862743 Probes for O_NOFOLLOW that compile and run something aren't compatible with cross compiling, so just #define it to 0 if it's not in fcntl.h where posix-2008 says.
Rob Landley <rob@landley.net>
parents: 1235
diff changeset
207 // Some systems don't define O_NOFOLLOW, and it varies by architecture, so...
565980862743 Probes for O_NOFOLLOW that compile and run something aren't compatible with cross compiling, so just #define it to 0 if it's not in fcntl.h where posix-2008 says.
Rob Landley <rob@landley.net>
parents: 1235
diff changeset
208 #include <fcntl.h>
565980862743 Probes for O_NOFOLLOW that compile and run something aren't compatible with cross compiling, so just #define it to 0 if it's not in fcntl.h where posix-2008 says.
Rob Landley <rob@landley.net>
parents: 1235
diff changeset
209 #ifndef O_NOFOLLOW
565980862743 Probes for O_NOFOLLOW that compile and run something aren't compatible with cross compiling, so just #define it to 0 if it's not in fcntl.h where posix-2008 says.
Rob Landley <rob@landley.net>
parents: 1235
diff changeset
210 #define O_NOFOLLOW 0
565980862743 Probes for O_NOFOLLOW that compile and run something aren't compatible with cross compiling, so just #define it to 0 if it's not in fcntl.h where posix-2008 says.
Rob Landley <rob@landley.net>
parents: 1235
diff changeset
211 #endif
1275
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
212
1433
00c20f410c46 Patches to commands for issues reported from static analysis tool.
Ashwini Sharma <ak.ashwini1981@gmail.com>
parents: 1395
diff changeset
213 #ifndef O_CLOEXEC
00c20f410c46 Patches to commands for issues reported from static analysis tool.
Ashwini Sharma <ak.ashwini1981@gmail.com>
parents: 1395
diff changeset
214 #define O_CLOEXEC 02000000
00c20f410c46 Patches to commands for issues reported from static analysis tool.
Ashwini Sharma <ak.ashwini1981@gmail.com>
parents: 1395
diff changeset
215 #endif
00c20f410c46 Patches to commands for issues reported from static analysis tool.
Ashwini Sharma <ak.ashwini1981@gmail.com>
parents: 1395
diff changeset
216
1275
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
217 #if defined(__SIZEOF_DOUBLE__) && defined(__SIZEOF_LONG__) \
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
218 && __SIZEOF_DOUBLE__ <= __SIZEOF_LONG__
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
219 typedef double FLOAT;
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
220 #else
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
221 typedef float FLOAT;
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
222 #endif
6f18a0845db3 Use compiler built-in macros to determine if argument parsing can use double or float for FLOAT arguments. (I.E. whether double fits in a long's memory.) Check in a way that the macros not being defined just gives us the shorter one.
Rob Landley <rob@landley.net>
parents: 1259
diff changeset
223
1600
ce22ad7a26c1 Work with buildroot's extensively patched uClibc, and for nommu support move xfork() to portability.h and #ifdef based on __uClinux__ (which seems to be the nommu compiler define).
Rob Landley <rob@landley.net>
parents: 1571
diff changeset
224 #ifndef __uClinux__
ce22ad7a26c1 Work with buildroot's extensively patched uClibc, and for nommu support move xfork() to portability.h and #ifdef based on __uClinux__ (which seems to be the nommu compiler define).
Rob Landley <rob@landley.net>
parents: 1571
diff changeset
225 pid_t xfork(void);
ce22ad7a26c1 Work with buildroot's extensively patched uClibc, and for nommu support move xfork() to portability.h and #ifdef based on __uClinux__ (which seems to be the nommu compiler define).
Rob Landley <rob@landley.net>
parents: 1571
diff changeset
226 #endif
ce22ad7a26c1 Work with buildroot's extensively patched uClibc, and for nommu support move xfork() to portability.h and #ifdef based on __uClinux__ (which seems to be the nommu compiler define).
Rob Landley <rob@landley.net>
parents: 1571
diff changeset
227
ce22ad7a26c1 Work with buildroot's extensively patched uClibc, and for nommu support move xfork() to portability.h and #ifdef based on __uClinux__ (which seems to be the nommu compiler define).
Rob Landley <rob@landley.net>
parents: 1571
diff changeset
228 //#define strncpy(...) @@strncpyisbadmmkay@@
ce22ad7a26c1 Work with buildroot's extensively patched uClibc, and for nommu support move xfork() to portability.h and #ifdef based on __uClinux__ (which seems to be the nommu compiler define).
Rob Landley <rob@landley.net>
parents: 1571
diff changeset
229 //#define strncat(...) @@strcatisbadmmkay@@