Update README.md
[termux-packages] / ndk_patches / pwd.patch
1 diff -u -r /home/fornwall/lib/android-ndk/platforms/android-21/arch-arm/usr/include/pwd.h ./usr/include/pwd.h
2 --- /home/fornwall/lib/android-ndk/platforms/android-21/arch-arm/usr/include/pwd.h 2014-10-14 22:53:49.000000000 -0400
3 +++ ./usr/include/pwd.h 2015-07-15 09:42:32.974621965 -0400
4 @@ -65,6 +65,9 @@
5 #include <sys/cdefs.h>
6 #include <sys/types.h>
7
8 +/* For access(): */
9 +#include <unistd.h>
10 +
11 #define _PATH_PASSWD "/etc/passwd"
12 #define _PATH_MASTERPASSWD "/etc/master.passwd"
13 #define _PATH_MASTERPASSWD_LOCK "/etc/ptmp"
14 @@ -119,6 +122,39 @@
15 int getpwnam_r(const char*, struct passwd*, char*, size_t, struct passwd**);
16 int getpwuid_r(uid_t, struct passwd*, char*, size_t, struct passwd**);
17
18 +extern char *realpath(const char *path, char *resolved_path);
19 +extern void free(void *ptr);
20 +extern void *memcpy(void *dest, const void *src, size_t n);
21 +extern size_t strlen(const char *s);
22 +
23 +static void android_setup_pwd(struct passwd* pw) {
24 + static char realpath_buffer[4096/*PATH_MAX*/];
25 + char* result = realpath("@TERMUX_HOME@/.termux/shell", realpath_buffer);
26 + if (result == NULL || access(realpath_buffer, X_OK) == -1) {
27 + pw->pw_shell = "@TERMUX_PREFIX@/bin/ash";
28 + } else {
29 + pw->pw_shell = realpath_buffer;
30 + }
31 + pw->pw_dir = "@TERMUX_HOME@";
32 + pw->pw_passwd = "*";
33 +}
34 +
35 +static struct passwd* android_polyfill_getpwuid(uid_t t) {
36 + struct passwd* pw = getpwuid(t);
37 + if (pw == NULL) return NULL;
38 + android_setup_pwd(pw);
39 + return pw;
40 +}
41 +
42 +static struct passwd* android_polyfill_getpwnam(const char* name) {
43 + struct passwd* pw = getpwnam(name);
44 + if (pw == NULL) return NULL;
45 + android_setup_pwd(pw);
46 + return pw;
47 +}
48 +
49 +#define getpwnam android_polyfill_getpwnam
50 +#define getpwuid android_polyfill_getpwuid
51 void endpwent(void);
52 struct passwd* getpwent(void);
53 int setpwent(void);