source:
EcnlProtoTool/trunk/musl-1.1.18/src/unistd/getcwd.c
Last change on this file was 444, checked in by , 4 years ago | |
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File size: 353 bytes |
Rev | Line | |
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[444] | 1 | #include <unistd.h> |
2 | #include <errno.h> | |
3 | #include <limits.h> | |
4 | #include <string.h> | |
5 | #include "syscall.h" | |
6 | ||
7 | char *getcwd(char *buf, size_t size) | |
8 | { | |
9 | char tmp[PATH_MAX]; | |
10 | if (!buf) { | |
11 | buf = tmp; | |
12 | size = PATH_MAX; | |
13 | } else if (!size) { | |
14 | errno = EINVAL; | |
15 | return 0; | |
16 | } | |
17 | if (syscall(SYS_getcwd, buf, size) < 0) return 0; | |
18 | return buf == tmp ? strdup(buf) : buf; | |
19 | } |
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