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Add install(1) -d support.

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This commit is contained in:
Jonas 'Sortie' Termansen 2017-10-23 17:27:00 +02:00
parent 7c91ea1b19
commit 0bb865a7d3
1 changed files with 48 additions and 1 deletions
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49
utils/cp.c
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@ -24,6 +24,9 @@
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#ifdef CP_PRETEND_TO_BE_INSTALL
#include <libgen.h>
#endif
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
@ -46,6 +49,34 @@ static const int FLAG_TARGET_DIR = 1 << 2;
static const int FLAG_NO_TARGET_DIR = 1 << 3;
static const int FLAG_UPDATE = 1 << 4;
static const int FLAG_FORCE = 1 << 5;
#ifdef CP_PRETEND_TO_BE_INSTALL
static const int FLAG_MKDIR = 1 << 31;
#endif
#ifdef CP_PRETEND_TO_BE_INSTALL
int mkdir_p(const char* path, mode_t mode)
{
int saved_errno = errno;
if ( !mkdir(path, mode) )
return 0;
if ( errno == ENOENT )
{
char* prev = strdup(path);
if ( !prev )
return -1;
int status = mkdir_p(dirname(prev), mode | 0500);
free(prev);
if ( status < 0 )
return -1;
errno = saved_errno;
if ( !mkdir(path, mode) )
return 0;
}
if ( errno == EEXIST )
return errno = saved_errno, 0;
return -1;
}
#endif
static char* join_paths(const char* a, const char* b)
{
@ -422,7 +453,7 @@ int main(int argc, char* argv[])
case 'b': /* ignored */ break;
case 'c': /* ignored */ break;
case 'C': /* ignored */ break;
case 'd': /* ignored */ break;
case 'd': flags |= FLAG_MKDIR; break;
case 'g': if ( *(arg + 1) ) arg = "g"; else if ( i + 1 != argc ) argv[++i] = NULL; break;
case 'm': if ( *(arg + 1) ) arg = "m"; else if ( i + 1 != argc ) argv[++i] = NULL; break;
case 'o': if ( *(arg + 1) ) arg = "o"; else if ( i + 1 != argc ) argv[++i] = NULL; break;
@ -518,6 +549,22 @@ int main(int argc, char* argv[])
if ( argc < 2 )
errx(1, "missing file operand");
#ifdef CP_PRETEND_TO_BE_INSTALL
if ( flags & FLAG_MKDIR )
{
bool success = true;
for ( int i = 1; i < argc; i++ )
{
if ( mkdir_p(argv[i], 0777) < 0 )
{
warn("%s", argv[i]);
success = false;
}
}
return success ? 0 : 1;
}
#endif
if ( flags & FLAG_NO_TARGET_DIR )
{
const char* src = argv[1];