diff options
Diffstat (limited to 'lib/mlibc/sysdeps/lyre/generic/mntent.cpp')
-rw-r--r-- | lib/mlibc/sysdeps/lyre/generic/mntent.cpp | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/lib/mlibc/sysdeps/lyre/generic/mntent.cpp b/lib/mlibc/sysdeps/lyre/generic/mntent.cpp deleted file mode 100644 index d064af3..0000000 --- a/lib/mlibc/sysdeps/lyre/generic/mntent.cpp +++ /dev/null @@ -1,97 +0,0 @@ -#include <errno.h> -#include <mntent.h> -#include <stdio.h> -#include <limits.h> -#include <string.h> -#include <bits/ensure.h> - -namespace { - -char *internal_buf; -size_t internal_bufsize; - -} - -#define SENTINEL (char *)&internal_buf - -FILE *setmntent(const char *name, const char *mode) { - return fopen(name, mode); -} - -struct mntent *getmntent(FILE *f) { - static struct mntent mnt; - return getmntent_r(f, &mnt, SENTINEL, 0); -} - -int addmntent(FILE *f, const struct mntent *mnt) { - if(fseek(f, 0, SEEK_END)) { - return 1; - } - return fprintf(f, "%s\t%s\t%s\t%s\t%d\t%d\n", - mnt->mnt_fsname, mnt->mnt_dir, mnt->mnt_type, mnt->mnt_opts, - mnt->mnt_freq, mnt->mnt_passno) < 0; -} - -int endmntent(FILE *f) { - if(f) { - fclose(f); - } - return 1; -} - -char *hasmntopt(const struct mntent *mnt, const char *opt) { - return strstr(mnt->mnt_opts, opt); -} - -/* Adapted from musl */ -struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int buflen) { - int n[8]; - bool use_internal = (linebuf == SENTINEL); - int len; - size_t i; - - mnt->mnt_freq = 0; - mnt->mnt_passno = 0; - - do { - if(use_internal) { - getline(&internal_buf, &internal_bufsize, f); - linebuf = internal_buf; - } else { - fgets(linebuf, buflen, f); - } - if(feof(f) || ferror(f)) { - return 0; - } - if(!strchr(linebuf, '\n')) { - fscanf(f, "%*[^\n]%*[\n]"); - errno = ERANGE; - return 0; - } - - len = strlen(linebuf); - if(len > INT_MAX) { - continue; - } - - for(i = 0; i < sizeof n / sizeof *n; i++) { - n[i] = len; - } - - sscanf(linebuf, " %n%*s%n %n%*s%n %n%*s%n %n%*s%n %d %d", - n, n + 1, n + 2, n + 3, n + 4, n + 5, n + 6, n + 7, - &mnt->mnt_freq, &mnt->mnt_passno); - } while(linebuf[n[0]] == '#' || n[1] == len); - - linebuf[n[1]] = 0; - linebuf[n[3]] = 0; - linebuf[n[5]] = 0; - linebuf[n[7]] = 0; - - mnt->mnt_fsname = linebuf + n[0]; - mnt->mnt_dir = linebuf + n[2]; - mnt->mnt_type = linebuf + n[4]; - mnt->mnt_opts = linebuf + n[6]; - - return mnt; -} |