diff options
Diffstat (limited to 'mount-deprecated/mount_mntent.c')
-rw-r--r-- | mount-deprecated/mount_mntent.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/mount-deprecated/mount_mntent.c b/mount-deprecated/mount_mntent.c new file mode 100644 index 000000000..88dab1025 --- /dev/null +++ b/mount-deprecated/mount_mntent.c @@ -0,0 +1,165 @@ +/* Private version of the libc *mntent() routines. */ +/* Note slightly different prototypes. */ + +/* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL> + * - added Native Language Support + */ + +#include <stdio.h> +#include <string.h> /* for index */ +#include <ctype.h> /* for isdigit */ +#include <sys/stat.h> /* for umask */ + +#include "mount_mntent.h" +#include "sundries.h" /* for xmalloc */ +#include "nls.h" +#include "mangle.h" +#include "closestream.h" + +static int +is_space_or_tab (char c) { + return (c == ' ' || c == '\t'); +} + +static char * +skip_spaces(char *s) { + while (is_space_or_tab(*s)) + s++; + return s; +} + +/* + * fstat'ing the file and allocating a buffer holding all of it + * may be a bad idea: if the file is /proc/mounts, the stat + * returns 0. + * (On the other hand, mangling and unmangling is meaningless + * for /proc/mounts.) + */ + +mntFILE * +my_setmntent (const char *file, char *mode) { + mntFILE *mfp = xmalloc(sizeof(*mfp)); + mode_t old_umask = umask(077); + + mfp->mntent_fp = fopen(file, mode); + umask(old_umask); + mfp->mntent_file = xstrdup(file); + mfp->mntent_errs = (mfp->mntent_fp == NULL); + mfp->mntent_softerrs = 0; + mfp->mntent_lineno = 0; + return mfp; +} + +void +my_endmntent(mntFILE * mfp) { + if (mfp) { + if (mfp->mntent_fp) + if (close_stream(mfp->mntent_fp)) + fprintf(stderr, _("write error")); + free(mfp->mntent_file); + free(mfp); + } +} + +int +my_addmntent (mntFILE *mfp, struct my_mntent *mnt) { + char *m1, *m2, *m3, *m4; + int res; + + if (fseek (mfp->mntent_fp, 0, SEEK_END)) + return 1; /* failure */ + + m1 = mangle(mnt->mnt_fsname); + m2 = mangle(mnt->mnt_dir); + m3 = mangle(mnt->mnt_type); + m4 = mnt->mnt_opts ? mangle(mnt->mnt_opts) : "rw"; + + res = fprintf (mfp->mntent_fp, "%s %s %s %s %d %d\n", + m1, m2, m3, m4, mnt->mnt_freq, mnt->mnt_passno); + + free(m1); + free(m2); + free(m3); + if (mnt->mnt_opts) + free(m4); + return (res < 0) ? 1 : 0; +} + +/* Read the next entry from the file fp. Stop reading at an incorrect entry. */ +struct my_mntent * +my_getmntent (mntFILE *mfp) { + static char buf[4096]; + static struct my_mntent me; + char *s; + + again: + if (mfp->mntent_errs || mfp->mntent_softerrs >= ERR_MAX) + return NULL; + + /* read the next non-blank non-comment line */ + do { + if (fgets (buf, sizeof(buf), mfp->mntent_fp) == NULL) + return NULL; + + mfp->mntent_lineno++; + s = strchr (buf, '\n'); + if (s == NULL) { + /* Missing final newline? Otherwise extremely */ + /* long line - assume file was corrupted */ + if (feof(mfp->mntent_fp)) { + fprintf(stderr, _("[mntent]: warning: no final " + "newline at the end of %s\n"), + mfp->mntent_file); + s = strchr (buf, 0); + } else { + mfp->mntent_errs = 1; + goto err; + } + } + *s = 0; + if (--s >= buf && *s == '\r') + *s = 0; + s = skip_spaces(buf); + } while (*s == '\0' || *s == '#'); + + me.mnt_fsname = unmangle(s, &s); + s = skip_spaces(s); + me.mnt_dir = unmangle(s, &s); + s = skip_spaces(s); + me.mnt_type = unmangle(s, &s); + s = skip_spaces(s); + me.mnt_opts = unmangle(s, &s); + s = skip_spaces(s); + + if (!me.mnt_fsname || !me.mnt_dir || !me.mnt_type) + goto err; + + if (isdigit(*s)) { + me.mnt_freq = atoi(s); + while(isdigit(*s)) s++; + } else + me.mnt_freq = 0; + if(*s && !is_space_or_tab(*s)) + goto err; + + s = skip_spaces(s); + if(isdigit(*s)) { + me.mnt_passno = atoi(s); + while(isdigit(*s)) s++; + } else + me.mnt_passno = 0; + if(*s && !is_space_or_tab(*s)) + goto err; + + /* allow more stuff, e.g. comments, on this line */ + + return &me; + + err: + mfp->mntent_softerrs++; + fprintf(stderr, _("[mntent]: line %d in %s is bad%s\n"), + mfp->mntent_lineno, mfp->mntent_file, + (mfp->mntent_errs || mfp->mntent_softerrs >= ERR_MAX) ? + _("; rest of file ignored") : ""); + goto again; +} |