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authorRon Yorston <rmy@pobox.com>2023-01-29 08:28:59 +0000
committerRon Yorston <rmy@pobox.com>2023-01-29 08:28:59 +0000
commit6295322661ac6c2ed90af69cba0003c6e37f9700 (patch)
tree44b70fdf880c37e5168ea16f2fa684b5debbadbc /win32/env.c
parent82f0d19b101271889b0b2ebe8cdb2f5eb4f64e6c (diff)
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win32: provide a default value for HOME
The busybox-w32 shell initialises HOME when it starts. However, if applets are run outside the environment provided by the shell they may find HOME is unset. This caused a problem for 'vi' as it was unable to locate its .exrc. If HOME isn't available in the environment make getenv(3) provide a sensible default value. The shell must use the *real* getenv(3) when determining if HOME is already set. Also, unrelated to the above, the shell shouldn't treat failure of getpwuid(3) as a fatal error. Costs 72-80 bytes.
Diffstat (limited to 'win32/env.c')
-rw-r--r--win32/env.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/win32/env.c b/win32/env.c
index 8e54c4c5e..f30ee62f6 100644
--- a/win32/env.c
+++ b/win32/env.c
@@ -6,11 +6,17 @@
6char *mingw_getenv(const char *name) 6char *mingw_getenv(const char *name)
7{ 7{
8 char *result = getenv(name); 8 char *result = getenv(name);
9 if (!result && !strcmp(name, "TMPDIR")) { 9 if (!result) {
10 /* on Windows it is TMP and TEMP */ 10 if (!strcmp(name, "TMPDIR")) {
11 result = getenv("TMP"); 11 /* on Windows it is TMP and TEMP */
12 if (!result) 12 result = getenv("TMP");
13 result = getenv("TEMP"); 13 if (!result)
14 result = getenv("TEMP");
15 } else if (!strcmp(name, "HOME")) {
16 struct passwd *p = getpwuid(getuid());
17 if (p)
18 result = p->pw_dir;
19 }
14 } 20 }
15 return result; 21 return result;
16} 22}