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debloat code that depends on /proc/self/fd/%d with shared function

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I intend to add more Linux workarounds that depend on using these
pathnames, and some of them will be in "syscall" functions that, from
an anti-bloat standpoint, should not depend on the whole snprintf
framework.
This commit is contained in:
Rich Felker 2013-08-02 12:59:45 -04:00
commit c8c0844f7f
5 changed files with 26 additions and 6 deletions
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4
src/stat/fchmodat.c
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@ -4,6 +4,8 @@
#include <stdio.h>
#include "syscall.h"
void __procfdname(char *, unsigned);
int fchmodat(int fd, const char *path, mode_t mode, int flag)
{
if (!flag) return syscall(SYS_fchmodat, fd, path, mode, flag);
@ -26,7 +28,7 @@ int fchmodat(int fd, const char *path, mode_t mode, int flag)
return __syscall_ret(fd2);
}
snprintf(proc, sizeof proc, "/proc/self/fd/%d", fd2);
__procfdname(proc, fd2);
if (!(ret = __syscall(SYS_stat, proc, &st)) && !S_ISLNK(st.st_mode))
ret = __syscall(SYS_chmod, proc, mode);