--- /dev/null
+From 0eb30761a26c46aaf555464114851202ae9c27bd Mon Sep 17 00:00:00 2001
+From: Henning Heinold <heinold@inf.fu-berlin.de>
+Date: Sat, 4 Jun 2011 21:23:15 +0200
+Subject: [PATCH] libc: add non standard execvpe function
+
+[Gustavo]: Drop TODO modification to make it compatible
+Signed-off-by: Henning Heinold <heinold@inf.fu-berlin.de>
+Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
+---
+ include/unistd.h | 8 ++++++++
+ libc/unistd/exec.c | 38 +++++++++++++++++++++++++++++++++-----
+ libc/unistd/execvpe.c | 7 +++++++
+ 4 files changed, 52 insertions(+), 5 deletions(-)
+ create mode 100644 libc/unistd/execvpe.c
+
+diff --git a/include/unistd.h b/include/unistd.h
+index feadf93..9479554 100644
+--- a/include/unistd.h
++++ b/include/unistd.h
+@@ -619,6 +619,14 @@ extern int execlp (const char *__file, const char *__arg, ...)
+ __THROW __nonnull ((1));
+ libc_hidden_proto(execlp)
+
++#ifdef __USE_GNU
++/* Execute FILE, searching in the `PATH' environment variable if it contains
++ no slashes, with arguments ARGV and environment from a pointer */
++extern int execvpe (__const char *__file, char *__const __argv[], char *__const __envp[])
++ __THROW __nonnull ((1));
++libc_hidden_proto(execvpe)
++#endif
++
+
+ #if defined __USE_MISC || defined __USE_XOPEN
+ /* Add INC to priority of the current process. */
+diff --git a/libc/unistd/exec.c b/libc/unistd/exec.c
+index ba92989..8fa42e5 100644
+--- a/libc/unistd/exec.c
++++ b/libc/unistd/exec.c
+@@ -32,6 +32,8 @@
+ /**********************************************************************/
+ #define EXEC_FUNC_COMMON 0
+ #define EXEC_FUNC_EXECVP 1
++#define EXEC_FUNC_EXECVPE 2
++
+ #if defined(__ARCH_USE_MMU__)
+
+ /* We have an MMU, so use alloca() to grab space for buffers and arg lists. */
+@@ -58,6 +60,7 @@
+ * execle(a) -> execve(-)
+ * execv(-) -> execve(-)
+ * execvp(a) -> execve(-)
++ * execvpe(a) -> execve(-)
+ */
+
+ # define EXEC_ALLOC_SIZE(VAR) /* nothing to do */
+@@ -219,15 +222,18 @@ libc_hidden_def(execlp)
+
+ #endif
+ /**********************************************************************/
+-#ifdef L_execvp
++#if defined (L_execvp) || defined(L_execvpe)
+
+
+ /* Use a default path that matches glibc behavior, since SUSv3 says
+ * this is implementation-defined. The default is current working dir,
+ * /bin, and then /usr/bin. */
+ static const char default_path[] = ":/bin:/usr/bin";
+-
++#if defined (L_execvp)
+ int execvp(const char *path, char *const argv[])
++#elif defined (L_execvpe)
++int execvpe(const char *path, char *const argv[], char *const envp[])
++#endif
+ {
+ char *buf = NULL;
+ char *p;
+@@ -245,7 +251,11 @@ int execvp(const char *path, char *const argv[])
+ }
+
+ if (strchr(path, '/')) {
++#if defined (L_execvp)
+ execve(path, argv, __environ);
++#elif defined (L_execvpe)
++ execve(path, argv, envp);
++#endif
+ if (errno == ENOEXEC) {
+ char **nargv;
+ EXEC_ALLOC_SIZE(size2) /* Do NOT add a semicolon! */
+@@ -254,11 +264,19 @@ int execvp(const char *path, char *const argv[])
+ /* Need the dimension - 1. We omit counting the trailing
+ * NULL but we actually omit the first entry. */
+ for (n=0 ; argv[n] ; n++) {}
++#if defined (L_execvp)
+ nargv = (char **) EXEC_ALLOC((n+2) * sizeof(char *), size2, EXEC_FUNC_EXECVP);
++#elif defined (L_execvpe)
++ nargv = (char **) EXEC_ALLOC((n+2) * sizeof(char *), size2, EXEC_FUNC_EXECVPE);
++#endif
+ nargv[0] = argv[0];
+ nargv[1] = (char *)path;
+ memcpy(nargv+2, argv+1, n*sizeof(char *));
++#if defined (L_execvp)
+ execve("/bin/sh", nargv, __environ);
++#elif defined (L_execvpe)
++ execve("/bin/sh", nargv, envp);
++#endif
+ EXEC_FREE(nargv, size2);
+ }
+ } else {
+@@ -277,8 +295,11 @@ int execvp(const char *path, char *const argv[])
+ return -1;
+ }
+ len = (FILENAME_MAX - 1) - plen;
+-
++#if defined (L_execvp)
+ buf = EXEC_ALLOC(FILENAME_MAX, size, EXEC_FUNC_EXECVP);
++#elif defined (L_execvpe)
++ buf = EXEC_ALLOC(FILENAME_MAX, size, EXEC_FUNC_EXECVPE);
++#endif
+ {
+ int seen_small = 0;
+ s0 = buf + len;
+@@ -300,8 +321,11 @@ int execvp(const char *path, char *const argv[])
+ s[plen-1] = '/';
+ }
+
++#if defined (L_execvp)
+ execve(s, argv, __environ);
+-
++#elif defined (L_execvpe)
++ execve(s, argv, envp);
++#endif
+ seen_small = 1;
+
+ if (errno == ENOEXEC) {
+@@ -325,7 +349,11 @@ int execvp(const char *path, char *const argv[])
+
+ return -1;
+ }
++#if defined (L_execvp)
+ libc_hidden_def(execvp)
+-
++#elif defined (L_execvpe)
++libc_hidden_def(execvpe)
+ #endif
++
++#endif /* #if defined (L_execvp) || defined(L_execvpe) */
+ /**********************************************************************/
+diff --git a/libc/unistd/execvpe.c b/libc/unistd/execvpe.c
+new file mode 100644
+index 0000000..c3c1e43
+--- /dev/null
++++ b/libc/unistd/execvpe.c
+@@ -0,0 +1,7 @@
++/* Copyright (C) 2011-2013 Hennning Heinold <heinold@inf.fu-berlin.de>
++ *
++ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
++ */
++
++#define L_execvpe
++#include "exec.c"
+--
+1.8.1.5
+
Code Review / packages / trusty / cirros-testvm.git / blobdiff