chiark - git - mdw - termux-packages/blob - ndk_patches/pwd.patch

   1 diff -u -r /home/fornwall/lib/android-ndk/platforms/android-21/arch-arm64/usr/include/pwd.h ./usr/include/pwd.h
   2 --- /home/fornwall/lib/android-ndk/platforms/android-21/arch-arm64/usr/include/pwd.h    2017-02-27 17:27:10.000000000 +0100
   3 +++ ./usr/include/pwd.h 2017-03-05 13:28:19.227658358 +0100
   4 @@ -65,6 +65,10 @@
   5  #include <sys/cdefs.h>
   6  #include <sys/types.h>
   7
   8 +/* For access() and realpath(): */
   9 +#include <unistd.h>
  10 +#include <stdlib.h>
  11 +
  12  #define _PATH_PASSWD        "/etc/passwd"
  13  #define _PATH_MASTERPASSWD  "/etc/master.passwd"
  14  #define _PATH_MASTERPASSWD_LOCK "/etc/ptmp"
  15 @@ -119,7 +123,52 @@
  16  int getpwnam_r(const char*, struct passwd*, char*, size_t, struct passwd**);
  17  int getpwuid_r(uid_t, struct passwd*, char*, size_t, struct passwd**);
  18
  19 -void endpwent(void);
  20 +static void android_setup_pwd(struct passwd* pw) {
  21 +       static char realpath_buffer[4096/*PATH_MAX*/];
  22 +       char* result = realpath("@TERMUX_HOME@/.termux/shell", realpath_buffer);
  23 +       if (result == NULL || access(realpath_buffer, X_OK) == -1) {
  24 +               char const* bash_path = "@TERMUX_PREFIX@/bin/bash";
  25 +               if (access(bash_path, X_OK) != -1) pw->pw_shell = (char*) bash_path;
  26 +               else pw->pw_shell = "@TERMUX_PREFIX@/bin/sh";
  27 +       } else {
  28 +               pw->pw_shell = realpath_buffer;
  29 +       }
  30 +       pw->pw_dir = "@TERMUX_HOME@";
  31 +       pw->pw_passwd = "*";
  32 +#ifdef __LP64__
  33 +       pw->pw_gecos = ""; /* Avoid NULL field. */
  34 +#endif
  35 +}
  36 +
  37 +static struct passwd* android_polyfill_getpwuid(uid_t t) {
  38 +       struct passwd* pw = getpwuid(t);
  39 +       if (pw == NULL) return NULL;
  40 +       android_setup_pwd(pw);
  41 +       return pw;
  42 +}
  43 +
  44 +static struct passwd* android_polyfill_getpwnam(const char* name) {
  45 +       struct passwd* pw = getpwnam(name);
  46 +       if (pw == NULL) return NULL;
  47 +       android_setup_pwd(pw);
  48 +       return pw;
  49 +}
  50 +
  51 +static int android_polyfill_getpwuid_r(uid_t uid,
  52 +                                       struct passwd *pwd,
  53 +                                       char *buffer,
  54 +                                       size_t bufsize,
  55 +                                       struct passwd **result) {
  56 +       int ret = getpwuid_r(uid, pwd, buffer, bufsize, result);
  57 +       if (ret != 0) return ret;
  58 +       android_setup_pwd(pwd);
  59 +       return 0;
  60 +}
  61 +
  62 +#define getpwnam android_polyfill_getpwnam
  63 +#define getpwuid android_polyfill_getpwuid
  64 +#define getpwuid_r android_polyfill_getpwuid_r
  65 +static void endpwent(void) { /* Do nothing. */ }
  66  struct passwd* getpwent(void);
  67  int setpwent(void);
  68