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Add execv(3) support to sudo_intercept.so.

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This allows intercept to work with csh which uses execv(3) not execve(2).
This commit is contained in:
Todd C. Miller
2021-08-21 08:44:16 -06:00
parent 02b78c38ed
commit 98401c0588
6 changed files with 37 additions and 18 deletions
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14
src/sudo_intercept.c
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@@ -48,6 +48,7 @@
#include "sudo_util.h"
#include "pathnames.h"
extern char **environ;
extern bool command_allowed(const char *cmnd, char * const argv[], char * const envp[], char **ncmnd, char ***nargv, char ***nenvp);
#ifdef HAVE___INTERPOSE
@@ -81,10 +82,17 @@ my_execve(const char *cmnd, char * const argv[], char * const envp[])
return -1;
}
static int
my_execv(const char *cmnd, char * const argv[])
{
return my_execve(cmnd, argv, environ);
}
/* Magic to tell dyld to do symbol interposition. */
__attribute__((__used__)) static const interpose_t interposers[]
__attribute__((__section__("__DATA,__interpose"))) = {
{ (void *)my_execve, (void *)execve }
{ (void *)my_execv, (void *)execv }
};
#else /* HAVE___INTERPOSE */
@@ -148,4 +156,10 @@ execve(const char *cmnd, char * const argv[], char * const envp[])
return -1;
}
sudo_dso_public int
execv(const char *cmnd, char * const argv[])
{
return execve(cmnd, argv, environ);
}
#endif /* HAVE___INTERPOSE) */