dqinfo(2type)

✨ NAME ✨

okay so bestie, this is the dqinfo page from the dqinfo(2type) manual — like, the type-definition corner of the man-pages world 💅 — and it's all about disk quota information. That's the struct + the flags you use when you're doing quota stuff. Slay.

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📚 LIBRARY 📚

Standard C library (libc) 🫶

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🎀 SYNOPSIS 🎀

no cap, here's the whole thing, verbatim:

#include <sys/quota.h>

struct dqinfo {
     uint64_t  dqi_bgrace;
     uint64_t  dqi_igrace;
     uint32_t  dqi_flags;
     uint32_t  dqi_valid;
};

/* Quota format QFMT_VFS_OLD */
#define DQF_ROOT_SQUASH (1 << 0)

/* Quota format QFMT_VFS_V0 / QFMT_VFS_V1 */
#define DQF_SYS_FILE    (1 << 16)

#define IIF_BGRACE  1
#define IIF_IGRACE  2
#define IIF_FLAGS   4
#define IIF_ALL     (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS)

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💖 DESCRIPTION 💖

🦋 struct dqinfo 🦋

the four fields, one by one, iykyk:

• .dqi_bgrace — how long you've got before your block soft limit goes full hard limit 💀 the timer, basically.
• .dqi_igrace — same energy but for the inode soft limit: how long until soft becomes hard.
• .dqi_flags — the flags for the quotafile, aka the DQF_* squad ✨
• .dqi_valid — a bit mask of the IIF_* constants. It gets set to tell you which fields in the dqinfo structure are actually valid 👑

🌈 DQF_* 🌈

• DQF_ROOT_SQUASH — root squash is enabled, periodt.
• DQF_SYS_FILE — the quota is stored in a system file. iconic 💅

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🌸 STANDARDS 🌸

Linux. just Linux 🫶

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🕰️ HISTORY 🕰️

dropped in Linux 2.4.22 ⭐

and lowkey a fun lore drop: before Linux 4.0, DQF_ROOT_SQUASH had been defined privately as V1_DQF_RSQUASH 😭 the glow-up was real.

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👀 SEE ALSO 👀

• Q_GETINFO(2const)
• Q_SETINFO(2const)

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and that's the whole vibe bestie 💖 this was page dqinfo(2type) from Linux man-pages 6.20, dated 2026-06-05 — go get that quota info, you absolute main character 👑✨